diff --git a/CHANGELOG.md b/CHANGELOG.md
index f6c4f71848..ce6dfb2693 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -39,6 +39,7 @@ _This release is scheduled to be released on 2024-01-01._
 - Fix #3256 filter out bad results from rrule.between
 - Fix calendar events sometimes not respecting deleted events (#3250)
 - Fix electron loadurl locally on Windows when address "0.0.0.0" (#2550)
+- Fix updatanotification (update_helper.js): catch error if reponse is not an JSON format (check PM2)
 
 ## [2.25.0] - 2023-10-01
 
diff --git a/modules/default/updatenotification/update_helper.js b/modules/default/updatenotification/update_helper.js
index 532472075c..41eb66b458 100644
--- a/modules/default/updatenotification/update_helper.js
+++ b/modules/default/updatenotification/update_helper.js
@@ -198,8 +198,14 @@ class Updater {
 					resolve(null);
 					return;
 				}
-				let result = JSON.parse(std);
-				resolve(result);
+				try {
+					let result = JSON.parse(std);
+					resolve(result);
+				} catch (e) {
+					Log.error("updatenotification: [PM2] can't GetList!");
+					Log.debug("updatenotification: [PM2] GetList is not an JSON format", e);
+					resolve(null);
+				}
 			});
 		});
 	}