Fix Uptime Kuma cannot be stopped

server/settings.js

@@ -158,6 +158,13 @@ class Settings {
             delete Settings.cacheList[key];
         }
     }
+
+    static stopCacheCleaner() {
+        if (Settings.cacheCleaner) {
+            clearInterval(Settings.cacheCleaner);
+            Settings.cacheCleaner = null;
+        }
+    }
 }
 
 module.exports = {