HC empty string issue

CHANGELOG.md

@@ -1,4 +1,5 @@
 ## 24.4.0
+- Improved Health Check feature stability
 - Added support for Feedback Widget terms and conditions
 
 ## 23.12.6

cypress/integration/health_check.js

@@ -21,7 +21,7 @@ describe("Health Check tests ", () => {
                 // Test the 'hc' parameter
                 const hcParam = url.searchParams.get("hc");
                 const hcParamObj = JSON.parse(hcParam);
-                expect(hcParamObj).to.eql({ el: 0, wl: 0, sc: -1, em: "\"\"" });
+                expect(hcParamObj).to.eql({ el: 0, wl: 0, sc: -1, em: "" });
 
                 // Test the 'metrics' parameter
                 const metricsParam = url.searchParams.get("metrics");

lib/countly.js

@@ -5335,12 +5335,16 @@
         function sendInstantHCRequest() {
             // truncate error message to 1000 characters
             var curbedMessage = truncateSingleValue(self.hcErrorMessage, 1000, "healthCheck", log);
+            // due to some server issues we pass empty string as is
+            if (curbedMessage !== "") {
+                curbedMessage = JSON.stringify(curbedMessage);
+            }
             // prepare hc object
             var hc = {
                 el: self.hcErrorCount,
                 wl: self.hcWarningCount,
                 sc: self.hcStatusCode,
-                em: JSON.stringify(curbedMessage)
+                em: curbedMessage
             };
             // prepare request
             var request = {