Firebase Plugin error when the app restarts

[peyman-mohtashami]

From Firebase Crashlytics:

Non-fatal Exception: org.json.JSONException: Value null at 1 of type org.json.JSONObject$1 cannot be converted to long
       at org.json.JSON.typeMismatch(JSON.java:101)
       at org.json.JSONArray.getLong(JSONArray.java:434)
       at org.apache.cordova.firebase.FirebasePlugin$29.run(FirebasePlugin.java:1054)
       at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1137)
       at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:637)
       at java.lang.Thread.run(Thread.java:1012)