diff --git a/1.hello-world/1.hello-world.html b/1.hello-world/1.hello-world.html
index 5951f8c7..a49ca380 100644
--- a/1.hello-world/1.hello-world.html
+++ b/1.hello-world/1.hello-world.html
@@ -64,7 +64,7 @@
await scanner.show();
} catch (ex) {
let errMsg;
- if (ex.message.includes("network connection error")) {
+ if (ex.message?.includes("network connection error")) {
errMsg = "Failed to connect to Dynamsoft License Server: network connection error. Check your Internet connection or contact Dynamsoft Support (support@dynamsoft.com) to acquire an offline license.";
} else {
errMsg = ex.message||ex;
diff --git a/1.hello-world/11.read-video-requirejs.html b/1.hello-world/11.read-video-requirejs.html
index 7fcf1b2e..d6359fe7 100644
--- a/1.hello-world/11.read-video-requirejs.html
+++ b/1.hello-world/11.read-video-requirejs.html
@@ -64,7 +64,7 @@ Hello World for RequireJS
await scanner.show();
} catch (ex) {
let errMsg;
- if (ex.message.includes("network connection error")) {
+ if (ex.message?.includes("network connection error")) {
errMsg = "Failed to connect to Dynamsoft License Server: network connection error. Check your Internet connection or contact Dynamsoft Support (support@dynamsoft.com) to acquire an offline license.";
} else {
errMsg = ex.message||ex;
diff --git a/1.hello-world/12.read-video-es6.html b/1.hello-world/12.read-video-es6.html
index 0ed344a7..c14f1c0d 100644
--- a/1.hello-world/12.read-video-es6.html
+++ b/1.hello-world/12.read-video-es6.html
@@ -62,7 +62,7 @@ Hello World for ES6
await scanner.show();
} catch (ex) {
let errMsg;
- if (ex.message.includes("network connection error")) {
+ if (ex.message?.includes("network connection error")) {
errMsg = "Failed to connect to Dynamsoft License Server: network connection error. Check your Internet connection or contact Dynamsoft Support (support@dynamsoft.com) to acquire an offline license.";
} else {
errMsg = ex.message||ex;
diff --git a/1.hello-world/14.read-video-webview/android/app/src/main/assets/decodeBarcodeInVideo.html b/1.hello-world/14.read-video-webview/android/app/src/main/assets/decodeBarcodeInVideo.html
index 480cb1ca..7630c2bd 100644
--- a/1.hello-world/14.read-video-webview/android/app/src/main/assets/decodeBarcodeInVideo.html
+++ b/1.hello-world/14.read-video-webview/android/app/src/main/assets/decodeBarcodeInVideo.html
@@ -57,7 +57,7 @@
await scanner.show();
} catch (ex) {
let errMsg;
- if (ex.message.includes("network connection error")) {
+ if (ex.message?.includes("network connection error")) {
errMsg = "Failed to connect to Dynamsoft License Server: network connection error. Check your Internet connection or contact Dynamsoft Support (support@dynamsoft.com) to acquire an offline license.";
} else {
errMsg = ex.message||ex;
diff --git a/1.hello-world/14.read-video-webview/ios/dbrjswebview/html/decodeFileInVideo.html b/1.hello-world/14.read-video-webview/ios/dbrjswebview/html/decodeFileInVideo.html
index ebdd0fbd..88a491ab 100644
--- a/1.hello-world/14.read-video-webview/ios/dbrjswebview/html/decodeFileInVideo.html
+++ b/1.hello-world/14.read-video-webview/ios/dbrjswebview/html/decodeFileInVideo.html
@@ -56,7 +56,7 @@
await scanner.show();
} catch (ex) {
let errMsg;
- if (ex.message.includes("network connection error")) {
+ if (ex.message?.includes("network connection error")) {
errMsg = "Failed to connect to Dynamsoft License Server: network connection error. Check your Internet connection or contact Dynamsoft Support (support@dynamsoft.com) to acquire an offline license.";
} else {
errMsg = ex.message||ex;
diff --git a/1.hello-world/2.read-an-image.html b/1.hello-world/2.read-an-image.html
index e4fe6c7f..32c02ab2 100644
--- a/1.hello-world/2.read-an-image.html
+++ b/1.hello-world/2.read-an-image.html
@@ -58,7 +58,7 @@ Read Barcode from Images
document.getElementById('p-loading').innerText = ex;
document.getElementById('ipt-file').disabled = true;
let errMsg;
- if (ex.message.includes("network connection error")) {
+ if (ex.message?.includes("network connection error")) {
errMsg = "Failed to connect to Dynamsoft License Server: network connection error. Check your Internet connection or contact Dynamsoft Support (support@dynamsoft.com) to acquire an offline license.";
} else {
errMsg = ex.message||ex;
@@ -110,7 +110,7 @@ Read Barcode from Images
divResults.scrollTop = divResults.scrollHeight;
} catch (ex) {
let errMsg;
- if (ex.message.includes("network connection error")) {
+ if (ex.message?.includes("network connection error")) {
errMsg = "Failed to connect to Dynamsoft License Server: network connection error. Check your Internet connection or contact Dynamsoft Support (support@dynamsoft.com) to acquire an offline license.";
} else {
errMsg = ex.message||ex;
diff --git a/1.hello-world/3.read-video-angular/README.md b/1.hello-world/3.read-video-angular/README.md
index e2187142..6e37ff80 100644
--- a/1.hello-world/3.read-video-angular/README.md
+++ b/1.hello-world/3.read-video-angular/README.md
@@ -89,7 +89,7 @@ export class VideoDecodeComponent implements OnInit {
await scanner.open();
} catch (ex: any) {
let errMsg;
- if (ex?.message.includes('network connection error')) {
+ if (ex.message?.includes('network connection error')) {
errMsg =
'Failed to connect to Dynamsoft License Server: network connection error. Check your Internet connection or contact Dynamsoft Support (support@dynamsoft.com) to acquire an offline license.';
} else {
@@ -159,7 +159,7 @@ export class ImgDecodeComponent implements OnInit {
if (!results.length) { alert('No barcode found'); }
} catch (ex: any) {
let errMsg;
- if (ex?.message.includes("network connection error")) {
+ if (ex.message?.includes("network connection error")) {
errMsg = "Failed to connect to Dynamsoft License Server: network connection error. Check your Internet connection or contact Dynamsoft Support (support@dynamsoft.com) to acquire an offline license.";
} else {
errMsg = ex.message||ex;
@@ -257,7 +257,7 @@ export class HelloWorldComponent implements OnInit {
await BarcodeScanner.loadWasm();
} catch (ex: any) {
let errMsg;
- if (ex?.message.includes("network connection error")) {
+ if (ex.message?.includes("network connection error")) {
errMsg = "Failed to connect to Dynamsoft License Server: network connection error. Check your Internet connection or contact Dynamsoft Support (support@dynamsoft.com) to acquire an offline license.";
} else {
errMsg = ex.message||ex;
diff --git a/1.hello-world/3.read-video-angular/src/app/hello-world/hello-world.component.ts b/1.hello-world/3.read-video-angular/src/app/hello-world/hello-world.component.ts
index eab41099..06ebc284 100644
--- a/1.hello-world/3.read-video-angular/src/app/hello-world/hello-world.component.ts
+++ b/1.hello-world/3.read-video-angular/src/app/hello-world/hello-world.component.ts
@@ -16,7 +16,7 @@ export class HelloWorldComponent implements OnInit {
await BarcodeScanner.loadWasm();
} catch (ex: any) {
let errMsg;
- if (ex?.message.includes("network connection error")) {
+ if (ex.message?.includes("network connection error")) {
errMsg = "Failed to connect to Dynamsoft License Server: network connection error. Check your Internet connection or contact Dynamsoft Support (support@dynamsoft.com) to acquire an offline license.";
} else {
errMsg = ex.message||ex;
diff --git a/1.hello-world/3.read-video-angular/src/app/img-decode/img-decode.component.ts b/1.hello-world/3.read-video-angular/src/app/img-decode/img-decode.component.ts
index 62ef1f45..c87b6967 100644
--- a/1.hello-world/3.read-video-angular/src/app/img-decode/img-decode.component.ts
+++ b/1.hello-world/3.read-video-angular/src/app/img-decode/img-decode.component.ts
@@ -23,7 +23,7 @@ export class ImgDecodeComponent implements OnInit {
if (!results.length) { alert('No barcode found'); }
} catch (ex: any) {
let errMsg;
- if (ex?.message.includes("network connection error")) {
+ if (ex.message?.includes("network connection error")) {
errMsg = "Failed to connect to Dynamsoft License Server: network connection error. Check your Internet connection or contact Dynamsoft Support (support@dynamsoft.com) to acquire an offline license.";
} else {
errMsg = ex.message||ex;
diff --git a/1.hello-world/3.read-video-angular/src/app/video-decode/video-decode.component.ts b/1.hello-world/3.read-video-angular/src/app/video-decode/video-decode.component.ts
index 84fcc838..2c67cfb8 100644
--- a/1.hello-world/3.read-video-angular/src/app/video-decode/video-decode.component.ts
+++ b/1.hello-world/3.read-video-angular/src/app/video-decode/video-decode.component.ts
@@ -25,7 +25,7 @@ export class VideoDecodeComponent implements OnInit {
await scanner.open();
} catch (ex: any) {
let errMsg;
- if (ex?.message.includes('network connection error')) {
+ if (ex.message?.includes('network connection error')) {
errMsg =
'Failed to connect to Dynamsoft License Server: network connection error. Check your Internet connection or contact Dynamsoft Support (support@dynamsoft.com) to acquire an offline license.';
} else {
diff --git a/1.hello-world/5.read-video-vue/README.md b/1.hello-world/5.read-video-vue/README.md
index 0ad44688..3b25beba 100644
--- a/1.hello-world/5.read-video-vue/README.md
+++ b/1.hello-world/5.read-video-vue/README.md
@@ -136,7 +136,7 @@ export default {
await scanner.open();
} catch (ex) {
let errMsg;
- if (ex.message.includes("network connection error")) {
+ if (ex.message?.includes("network connection error")) {
errMsg = "Failed to connect to Dynamsoft License Server: network connection error. Check your Internet connection or contact Dynamsoft Support (support@dynamsoft.com) to acquire an offline license.";
} else {
errMsg = ex.message||ex;
@@ -310,7 +310,7 @@ export default {
if (!results.length) { alert('No barcode found'); }
} catch (ex) {
let errMsg;
- if (ex.message.includes("network connection error")) {
+ if (ex.message?.includes("network connection error")) {
errMsg = "Failed to connect to Dynamsoft License Server: network connection error. Check your Internet connection or contact Dynamsoft Support (support@dynamsoft.com) to acquire an offline license.";
} else {
errMsg = ex.message||ex;
@@ -379,7 +379,7 @@ export default {
await BarcodeReader.loadWasm();
} catch (ex) {
let errMsg;
- if (ex.message.includes("network connection error")) {
+ if (ex.message?.includes("network connection error")) {
errMsg = "Failed to connect to Dynamsoft License Server: network connection error. Check your Internet connection or contact Dynamsoft Support (support@dynamsoft.com) to acquire an offline license.";
} else {
errMsg = ex.message||ex;
diff --git a/1.hello-world/5.read-video-vue/src/components/HelloWorld.vue b/1.hello-world/5.read-video-vue/src/components/HelloWorld.vue
index e8926bd7..3f438a2c 100644
--- a/1.hello-world/5.read-video-vue/src/components/HelloWorld.vue
+++ b/1.hello-world/5.read-video-vue/src/components/HelloWorld.vue
@@ -34,7 +34,7 @@ export default {
await BarcodeReader.loadWasm();
} catch (ex) {
let errMsg;
- if (ex.message.includes("network connection error")) {
+ if (ex.message?.includes("network connection error")) {
errMsg = "Failed to connect to Dynamsoft License Server: network connection error. Check your Internet connection or contact Dynamsoft Support (support@dynamsoft.com) to acquire an offline license.";
} else {
errMsg = ex.message||ex;
diff --git a/1.hello-world/5.read-video-vue/src/components/ImgDecode.vue b/1.hello-world/5.read-video-vue/src/components/ImgDecode.vue
index 59192dac..05888dc3 100644
--- a/1.hello-world/5.read-video-vue/src/components/ImgDecode.vue
+++ b/1.hello-world/5.read-video-vue/src/components/ImgDecode.vue
@@ -22,7 +22,7 @@ export default {
if (!results.length) { alert('No barcode found'); }
} catch (ex) {
let errMsg;
- if (ex.message.includes("network connection error")) {
+ if (ex.message?.includes("network connection error")) {
errMsg = "Failed to connect to Dynamsoft License Server: network connection error. Check your Internet connection or contact Dynamsoft Support (support@dynamsoft.com) to acquire an offline license.";
} else {
errMsg = ex.message||ex;
diff --git a/1.hello-world/5.read-video-vue/src/components/VideoDecode.vue b/1.hello-world/5.read-video-vue/src/components/VideoDecode.vue
index 598e5886..9e130a35 100644
--- a/1.hello-world/5.read-video-vue/src/components/VideoDecode.vue
+++ b/1.hello-world/5.read-video-vue/src/components/VideoDecode.vue
@@ -86,7 +86,7 @@ export default {
await scanner.open();
} catch (ex) {
let errMsg;
- if (ex.message.includes("network connection error")) {
+ if (ex.message?.includes("network connection error")) {
errMsg = "Failed to connect to Dynamsoft License Server: network connection error. Check your Internet connection or contact Dynamsoft Support (support@dynamsoft.com) to acquire an offline license.";
} else {
errMsg = ex.message||ex;
diff --git a/1.hello-world/9.read-video-electron/action.js b/1.hello-world/9.read-video-electron/action.js
index 5a77797a..514a8b57 100644
--- a/1.hello-world/9.read-video-electron/action.js
+++ b/1.hello-world/9.read-video-electron/action.js
@@ -28,7 +28,7 @@
await scanner.show();
} catch (ex) {
let errMsg;
- if (ex?.message.includes("network connection error")) {
+ if (ex.message?.includes("network connection error")) {
errMsg = "Failed to connect to Dynamsoft License Server: network connection error. Check your Internet connection or contact Dynamsoft Support (support@dynamsoft.com) to acquire an offline license.";
} else {
errMsg = ex.message||ex;
diff --git a/2.ui-tweaking/1.read-video-show-result.html b/2.ui-tweaking/1.read-video-show-result.html
index 3bdfb0a9..9a2b273e 100644
--- a/2.ui-tweaking/1.read-video-show-result.html
+++ b/2.ui-tweaking/1.read-video-show-result.html
@@ -54,7 +54,7 @@ Use the Default Built-in UI
startBarcodeScanner();
} catch (ex) {
let errMsg;
- if (ex.message.includes("network connection error")) {
+ if (ex.message?.includes("network connection error")) {
errMsg = "Failed to connect to Dynamsoft License Server: network connection error. Check your Internet connection or contact Dynamsoft Support (support@dynamsoft.com) to acquire an offline license.";
} else {
errMsg = ex.message||ex;
@@ -105,7 +105,7 @@ Use the Default Built-in UI
document.getElementById('results').style.visibility = "visible";
} catch (ex) {
let errMsg;
- if (ex.message.includes("network connection error")) {
+ if (ex.message?.includes("network connection error")) {
errMsg = "Failed to connect to Dynamsoft License Server: network connection error. Check your Internet connection or contact Dynamsoft Support (support@dynamsoft.com) to acquire an offline license.";
} else {
errMsg = ex.message||ex;
diff --git a/2.ui-tweaking/2.read-video-no-extra-control.html b/2.ui-tweaking/2.read-video-no-extra-control.html
index 1d5cb14e..4d30c0b0 100644
--- a/2.ui-tweaking/2.read-video-no-extra-control.html
+++ b/2.ui-tweaking/2.read-video-no-extra-control.html
@@ -54,7 +54,7 @@ Hide UI Controls
showScanner();
} catch (ex) {
let errMsg;
- if (ex.message.includes("network connection error")) {
+ if (ex.message?.includes("network connection error")) {
errMsg = "Failed to connect to Dynamsoft License Server: network connection error. Check your Internet connection or contact Dynamsoft Support (support@dynamsoft.com) to acquire an offline license.";
} else {
errMsg = ex.message||ex;
@@ -81,7 +81,7 @@ Hide UI Controls
document.getElementById('lib-load').hidden = true;
} catch (ex) {
let errMsg;
- if (ex.message.includes("network connection error")) {
+ if (ex.message?.includes("network connection error")) {
errMsg = "Failed to connect to Dynamsoft License Server: network connection error. Check your Internet connection or contact Dynamsoft Support (support@dynamsoft.com) to acquire an offline license.";
} else {
errMsg = ex.message||ex;
diff --git a/2.ui-tweaking/3.read-video-with-external-control.html b/2.ui-tweaking/3.read-video-with-external-control.html
index 7c193be0..8d3022ea 100644
--- a/2.ui-tweaking/3.read-video-with-external-control.html
+++ b/2.ui-tweaking/3.read-video-with-external-control.html
@@ -113,7 +113,7 @@ Customized UI
await Dynamsoft.DBR.BarcodeReader.loadWasm();
} catch (ex) {
let errMsg;
- if (ex.message.includes("network connection error")) {
+ if (ex.message?.includes("network connection error")) {
errMsg = "Failed to connect to Dynamsoft License Server: network connection error. Check your Internet connection or contact Dynamsoft Support (support@dynamsoft.com) to acquire an offline license.";
} else {
errMsg = ex.message||ex;
@@ -144,7 +144,7 @@ Customized UI
updateCurrentResolution();
} catch (ex) {
let errMsg;
- if (ex.message.includes("network connection error")) {
+ if (ex.message?.includes("network connection error")) {
errMsg = "Failed to connect to Dynamsoft License Server: network connection error. Check your Internet connection or contact Dynamsoft Support (support@dynamsoft.com) to acquire an offline license.";
} else {
errMsg = ex.message||ex;
diff --git a/2.ui-tweaking/4.difference-video-size.html b/2.ui-tweaking/4.difference-video-size.html
index 0b2c5028..bfbcf891 100644
--- a/2.ui-tweaking/4.difference-video-size.html
+++ b/2.ui-tweaking/4.difference-video-size.html
@@ -57,7 +57,7 @@ Enlarge the Video Stream
showScanner();
} catch (ex) {
let errMsg;
- if (ex.message.includes("network connection error")) {
+ if (ex.message?.includes("network connection error")) {
errMsg = "Failed to connect to Dynamsoft License Server: network connection error. Check your Internet connection or contact Dynamsoft Support (support@dynamsoft.com) to acquire an offline license.";
} else {
errMsg = ex.message||ex;
@@ -109,7 +109,7 @@ Enlarge the Video Stream
document.getElementById('result').hidden = false;
} catch (ex) {
let errMsg;
- if (ex.message.includes("network connection error")) {
+ if (ex.message?.includes("network connection error")) {
errMsg = "Failed to connect to Dynamsoft License Server: network connection error. Check your Internet connection or contact Dynamsoft Support (support@dynamsoft.com) to acquire an offline license.";
} else {
errMsg = ex.message||ex;
diff --git a/2.ui-tweaking/5.read-video-with-custom-default-ui.html b/2.ui-tweaking/5.read-video-with-custom-default-ui.html
index 66bb205e..b1003a99 100644
--- a/2.ui-tweaking/5.read-video-with-custom-default-ui.html
+++ b/2.ui-tweaking/5.read-video-with-custom-default-ui.html
@@ -114,7 +114,7 @@ Customized Default UI
renderResolutionSelector();
} catch (ex) {
let errMsg;
- if (ex.message.includes("network connection error")) {
+ if (ex.message?.includes("network connection error")) {
errMsg = "Failed to connect to Dynamsoft License Server: network connection error. Check your Internet connection or contact Dynamsoft Support (support@dynamsoft.com) to acquire an offline license.";
} else {
errMsg = ex.message || ex;
diff --git a/3.settings/6.dense-barcodes.html b/3.settings/6.dense-barcodes.html
index ab674628..f577aed9 100644
--- a/3.settings/6.dense-barcodes.html
+++ b/3.settings/6.dense-barcodes.html
@@ -84,7 +84,7 @@
await scanner.open();
} catch (ex) {
let errMsg;
- if (ex.message.includes("network connection error")) {
+ if (ex.message?.includes("network connection error")) {
errMsg =
"Failed to connect to Dynamsoft License Server: network connection error. Check your Internet connection or contact Dynamsoft Support (support@dynamsoft.com) to acquire an offline license.";
} else {
diff --git a/3.settings/initScanner.js b/3.settings/initScanner.js
index df608123..567c9e55 100644
--- a/3.settings/initScanner.js
+++ b/3.settings/initScanner.js
@@ -38,7 +38,7 @@ window.onload = async function () {
startReading();
} catch (ex) {
let errMsg;
- if (ex.message.includes("network connection error")) {
+ if (ex.message?.includes("network connection error")) {
errMsg = "Failed to connect to Dynamsoft License Server: network connection error. Check your Internet connection or contact Dynamsoft Support (support@dynamsoft.com) to acquire an offline license.";
} else {
errMsg = ex.message||ex;
diff --git a/4.use-case/1.fill-a-form-with-barcode-reading.html b/4.use-case/1.fill-a-form-with-barcode-reading.html
index 9df162f9..636a6cc3 100644
--- a/4.use-case/1.fill-a-form-with-barcode-reading.html
+++ b/4.use-case/1.fill-a-form-with-barcode-reading.html
@@ -89,7 +89,7 @@ Click each input box to fill in!
await scanner.show();
} catch (ex) {
let errMsg;
- if (ex.message.includes("network connection error")) {
+ if (ex.message?.includes("network connection error")) {
errMsg = "Failed to connect to Dynamsoft License Server: network connection error. Check your Internet connection or contact Dynamsoft Support (support@dynamsoft.com) to acquire an offline license.";
} else {
errMsg = ex.message||ex;
@@ -103,7 +103,7 @@ Click each input box to fill in!
await Dynamsoft.DBR.BarcodeScanner.loadWasm();
} catch (ex) {
let errMsg;
- if (ex.message.includes("network connection error")) {
+ if (ex.message?.includes("network connection error")) {
errMsg = "Failed to connect to Dynamsoft License Server: network connection error. Check your Internet connection or contact Dynamsoft Support (support@dynamsoft.com) to acquire an offline license.";
} else {
errMsg = ex.message||ex;
diff --git a/4.use-case/2.read-a-drivers-license.html b/4.use-case/2.read-a-drivers-license.html
index 7d9e4bb0..5a686ecb 100644
--- a/4.use-case/2.read-a-drivers-license.html
+++ b/4.use-case/2.read-a-drivers-license.html
@@ -76,7 +76,7 @@