Ionic v5. iOS platform. Could not signal service com.apple.WebKit.WebContent: 113.

[klochko7]

Good day ! Could anyone suggest please .. Ioinc 5 app crashed on iOS platform when I am downloaded a lot of files from server by angular HttpRequest ... The mobile app is working fine on Android 9,10.

Error...

2021-02-01 17:30:05.904879+0200 Parts[1305:358229] Could not signal service com.apple.WebKit.WebContent: 113: Could not find specified service

Installed platforms ios 6.1.1,

add to config.xml preference name="WKWebViewOnly" value="true"

Tested on iOS version ipad 12.5.1 and iphone 14.4

ionic info:

Ionic:

   Ionic CLI                     : 5.4.16 (/usr/local/lib/node_modules/ionic)
   Ionic Framework               : @ionic/angular 5.5.2
   @angular-devkit/build-angular : 0.1000.8
   @angular-devkit/schematics    : 10.0.8
   @angular/cli                  : 10.0.8
   @ionic/angular-toolkit        : 2.3.3

Cordova:

   Cordova CLI       : 10.0.0
   Cordova Platforms : none
   Cordova Plugins   : no whitelisted plugins (0 plugins total)

Utility:

   cordova-res : not installed
   native-run  : not installed

System:

   ios-deploy : 1.11.3
   ios-sim    : 8.0.2
   NodeJS     : v14.15.4 (/usr/local/bin/node)
   npm        : 6.14.10
   OS         : macOS Big Sur
   Xcode      : Xcode 12.4 Build version 12D4e

Plugin list:

com-sarriaroman-photoviewer 1.2.4 "PhotoViewer"
cordova-clipboard 1.3.0 "Clipboard"
cordova-plugin-advanced-http 3.1.0 "Advanced HTTP plugin"
cordova-plugin-android-permissions 1.1.2 "Permissions"
cordova-plugin-app-version 0.1.12 "AppVersion"
cordova-plugin-background-mode 0.7.3 "BackgroundMode"
cordova-plugin-badge 0.8.8 "Badge"
cordova-plugin-compat 1.2.0 "Compat"
cordova-plugin-device 2.0.2 "Device"
cordova-plugin-file-opener2 3.0.5 "File Opener2"
cordova-plugin-file-transfer 2.0.0-dev "File Transfer"
cordova-plugin-file 6.0.2 "File"
cordova-plugin-inappbrowser 4.1.0 "InAppBrowser"
cordova-plugin-ionic-keyboard 2.2.0 "cordova-plugin-ionic-keyboard"
cordova-plugin-ionic-webview 4.2.1 "cordova-plugin-ionic-webview"
cordova-plugin-local-notification 0.9.0-beta.2 "LocalNotification"
cordova-plugin-ms-adal 0.8.1 "ADAL for Cordova"
cordova-plugin-nativestorage 2.3.2 "NativeStorage"
cordova-plugin-network-information 2.0.2 "Network Information"
cordova-plugin-printer 0.8.0 "Printer"
cordova-plugin-screen-orientation 3.0.2 "Screen Orientation"
cordova-plugin-splashscreen 5.0.2 "Splashscreen"
cordova-plugin-statusbar 2.4.2 "StatusBar"
cordova-plugin-vibration 3.1.1 "Vibration"
cordova-plugin-whitelist 1.3.3 "Whitelist"
cordova-plugin-wkwebview-engine 1.2.2-dev "Cordova WKWebView Engine"
cordova-plugin-wkwebviewxhrfix 1.0.0 "Cordova WKWebView File XHR Fix"
cordova-plugin-zip 3.1.0 "cordova-plugin-zip"
cordova-sqlite-storage 5.1.1-dev "Cordova sqlite storage plugin - cordova-sqlite-storage plugin version"
cordova.plugins.diagnostic 6.0.3 "Diagnostic"

[klochko7]

It seems I solved this problem ...

• installed cordova plugin add cordova-plugin-ionic-webview@latest
• installed ios@6.2.0

[MilotH2]

I tried almost everything, my solution was simple, updating MacOS to the latest version, and also Xcode to the latest version, that way the error was gone, white blank screen was not happening anymore.