handle nested json exceptions

Signed-off-by: Robin Appelman <robin@icewind.nl>

Author: icewind1991

js/logreader-main.js

@@ -6,13 +6,17 @@ window.unserialize = unserialize;
 
 export class ExceptionParser {
 	isException (logMessage) {
-		return this.isNewStyleException(logMessage) || this.isOldStyleException(logMessage) || this.isBackgroundJobException(logMessage);
+		return this.isNewStyleException(logMessage) || this.isOldStyleException(logMessage) || this.isBackgroundJobException(logMessage) || this.isNestedJsonException(logMessage);
 	}
 
 	isNewStyleException (logMessage) {
 		return logMessage.Exception;
 	}
 
+	isNestedJsonException (logMessage) {
+		return logMessage.substr && logMessage[0] === '{';
+	}
+
 	isOldStyleException (logMessage) {
 		return logMessage.substr && logMessage.substr(0, 12) === 'Exception: {';
 	}
@@ -34,6 +38,14 @@ export class ExceptionParser {
 				console.log(logMessage.substr(10));
 				console.error(e);
 			}
+		} else if (this.isNestedJsonException(logMessage)) {
+			try {
+				return this.tryParseJSON(logMessage);
+			} catch (e) {
+				console.log('Error while parsing exception:');
+				console.log(logMessage.substr(10));
+				console.error(e);
+			}
 		} else {
 			data = this.tryParseJSON(logMessage.substr(logMessage.indexOf('{"Exception":')));
 			const messageHead = logMessage.substr(0, logMessage.indexOf('{"Exception":'));