Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

Αυτός ο ιστότοπος θα έχει περιορισμένη λειτουργικότητα, όσο εκτελούμε εργασίες συντήρησης για να βελτιώσουμε την εμπειρία σας. Αν ένα άρθρο δεν επιλύει το ζήτημά σας και θέλετε να κάνετε μια ερώτηση, η κοινότητα υποστήριξής μας είναι έτοιμη να σας βοηθήσει στο Twitter (@FirefoxSupport) και στο Reddit (/r/firefox).

Avatar for Username

Αναζήτηση στην υποστήριξη

Προσοχή στις απάτες! Δεν θα σας ζητήσουμε ποτέ να καλέσετε ή να στείλετε μήνυμα σε κάποιον αριθμό τηλεφώνου ή να μοιραστείτε προσωπικά δεδομένα. Αναφέρετε τυχόν ύποπτη δραστηριότητα μέσω της επιλογής «Αναφορά κατάχρησης».

Μάθετε περισσότερα

Αυτό το νήμα αρχειοθετήθηκε. Παρακαλούμε κάντε νέα ερώτηση αν χρειάζεστε βοήθεια.

Error is thrown only after adding a breakpoint in WebExtenstion debugger

  • 1 απάντηση
  • 1 έχει αυτό το πρόβλημα
  • 14 προβολές
  • Τελευταία απάντηση από Shadow110

deelydian
deelydian
more options

I'm not sure what has happened, but all of a sudden, the WebExtension I am working on started to throw an error when debugging. So far as I'm aware, there was no change to the code to cause the error, and I even rolled back to an earlier version of the extension in order to see if I had inadvertently caused a problem by adding something to the scripts I couldn't remember adding. The earlier version is no longer working correctly either.

Everything seems to be find until I add a breakpoint. After adding a breakpoint to the debugger in the FireFox Developer browser, an error is thrown, and I am unable to step through the code. Previously, I was able to set breakpoints and step through normally, but it will not work any longer. I've searched for answers online, but I'm not able to understand the error enough to gain any traction. Here is the error the console is writing:


error occurred while processing 'frames: TypeError: window is null Stack: webExtensionChildPrototype.isExtensionWindow@resource://devtools/shared/base-loader.js -> resource://devtools/server/actors/webextension.js:284:3 webExtensionChildPrototype._allowSource@resource://devtools/shared/base-loader.js -> resource://devtools/server/actors/webextension.js:304:13 TabSources/this.allowSource@resource://devtools/shared/base-loader.js -> resource://devtools/server/actors/utils/TabSources.js:30:39 source@resource://devtools/shared/base-loader.js -> resource://devtools/server/actors/utils/TabSources.js:118:12 createNonSourceMappedActor@resource://devtools/shared/base-loader.js -> resource://devtools/server/actors/utils/TabSources.js:357:12 getFrameLocation@resource://devtools/shared/base-loader.js -> resource://devtools/server/actors/utils/TabSources.js:587:7 form@resource://devtools/shared/base-loader.js -> resource://devtools/server/actors/frame.js:93:31 onFrames@resource://devtools/shared/base-loader.js -> resource://devtools/server/actors/thread.js:949:18 onPacket@resource://devtools/shared/base-loader.js -> resource://devtools/server/main.js:1761:15 receiveMessage@resource://devtools/shared/base-loader.js -> resource://devtools/shared/transport/transport.js:735:7 enter@resource://devtools/shared/base-loader.js -> resource://devtools/server/actors/utils/event-loop.js:118:5 _pushThreadPause@resource://devtools/shared/base-loader.js -> resource://devtools/server/actors/thread.js:178:5 _pauseAndRespond@resource://devtools/shared/base-loader.js -> resource://devtools/server/actors/thread.js:390:7 hit@resource://devtools/shared/base-loader.js -> resource://devtools/server/actors/breakpoint.js:188:12 appAPI.CallCrossDomain@moz-extension://d059ac7f-1fe3-7649-b7ca-e14cb93b87b0/popup/scripts/appapiclass.js:92:8 CheckLoginProcess@moz-extension://d059ac7f-1fe3-7649-b7ca-e14cb93b87b0/popup/scripts/popup.js:1434:4 FireLogin@moz-extension://d059ac7f-1fe3-7649-b7ca-e14cb93b87b0/popup/scripts/popup.js:1632:5 DrawLoginUI/<@moz-extension://d059ac7f-1fe3-7649-b7ca-e14cb93b87b0/popup/scripts/popup.js:181:6 dispatch@moz-extension://d059ac7f-1fe3-7649-b7ca-e14cb93b87b0/popup/scripts/jquery.js:5182:16 add/elemData.handle@moz-extension://d059ac7f-1fe3-7649-b7ca-e14cb93b87b0/popup/scripts/jquery.js:4991:6 Line: 284, column: 3 main.js:1616

_unknownError resource://devtools/server/main.js:1616:5 onPacket resource://devtools/server/main.js:1764:29 receiveMessage resource://devtools/shared/transport/transport.js:735:7 enter resource://devtools/server/actors/utils/event-loop.js:118:5 enter self-hosted:981:17 _pushThreadPause resource://devtools/server/actors/thread.js:178:5 _pauseAndRespond resource://devtools/server/actors/thread.js:390:7 next self-hosted:1219:9 hit resource://devtools/server/actors/breakpoint.js:188:12 appAPI.CallCrossDomain moz-extension://d059ac7f-1fe3-7649-b7ca-e14cb93b87b0/popup/scripts/appapiclass.js:92:8 CheckLoginProcess moz-extension://d059ac7f-1fe3-7649-b7ca-e14cb93b87b0/popup/scripts/popup.js:1434:4 FireLogin moz-extension://d059ac7f-1fe3-7649-b7ca-e14cb93b87b0/popup/scripts/popup.js:1632:5 DrawLoginUI/< moz-extension://d059ac7f-1fe3-7649-b7ca-e14cb93b87b0/popup/scripts/popup.js:181:6 dispatch moz-extension://d059ac7f-1fe3-7649-b7ca-e14cb93b87b0/popup/scripts/jquery.js:5182:16 add/elemData.handle moz-extension://d059ac7f-1fe3-7649-b7ca-e14cb93b87b0/popup/scripts/jquery.js:4991:6


I can provide code snippets if needed, but since the error is only thrown after I add the breakpoint, I don't know what code would be helpful for leading to a solution.

I'm hoping I have not missed something silly here, but I have searched for "window is null", "TypeError: window is null", "'frames: TypeError: windows is null" as well as other debugging searches in relation to jQuery and just can't find anything. Any help would be much appreciated.

I'm not sure what has happened, but all of a sudden, the WebExtension I am working on started to throw an error when debugging. So far as I'm aware, there was no change to the code to cause the error, and I even rolled back to an earlier version of the extension in order to see if I had inadvertently caused a problem by adding something to the scripts I couldn't remember adding. The earlier version is no longer working correctly either. Everything seems to be find until I add a breakpoint. After adding a breakpoint to the debugger in the FireFox Developer browser, an error is thrown, and I am unable to step through the code. Previously, I was able to set breakpoints and step through normally, but it will not work any longer. I've searched for answers online, but I'm not able to understand the error enough to gain any traction. Here is the error the console is writing: error occurred while processing 'frames: TypeError: window is null Stack: webExtensionChildPrototype.isExtensionWindow@resource://devtools/shared/base-loader.js -> resource://devtools/server/actors/webextension.js:284:3 webExtensionChildPrototype._allowSource@resource://devtools/shared/base-loader.js -> resource://devtools/server/actors/webextension.js:304:13 TabSources/this.allowSource@resource://devtools/shared/base-loader.js -> resource://devtools/server/actors/utils/TabSources.js:30:39 source@resource://devtools/shared/base-loader.js -> resource://devtools/server/actors/utils/TabSources.js:118:12 createNonSourceMappedActor@resource://devtools/shared/base-loader.js -> resource://devtools/server/actors/utils/TabSources.js:357:12 getFrameLocation@resource://devtools/shared/base-loader.js -> resource://devtools/server/actors/utils/TabSources.js:587:7 form@resource://devtools/shared/base-loader.js -> resource://devtools/server/actors/frame.js:93:31 onFrames@resource://devtools/shared/base-loader.js -> resource://devtools/server/actors/thread.js:949:18 onPacket@resource://devtools/shared/base-loader.js -> resource://devtools/server/main.js:1761:15 receiveMessage@resource://devtools/shared/base-loader.js -> resource://devtools/shared/transport/transport.js:735:7 enter@resource://devtools/shared/base-loader.js -> resource://devtools/server/actors/utils/event-loop.js:118:5 _pushThreadPause@resource://devtools/shared/base-loader.js -> resource://devtools/server/actors/thread.js:178:5 _pauseAndRespond@resource://devtools/shared/base-loader.js -> resource://devtools/server/actors/thread.js:390:7 hit@resource://devtools/shared/base-loader.js -> resource://devtools/server/actors/breakpoint.js:188:12 appAPI.CallCrossDomain@moz-extension://d059ac7f-1fe3-7649-b7ca-e14cb93b87b0/popup/scripts/appapiclass.js:92:8 CheckLoginProcess@moz-extension://d059ac7f-1fe3-7649-b7ca-e14cb93b87b0/popup/scripts/popup.js:1434:4 FireLogin@moz-extension://d059ac7f-1fe3-7649-b7ca-e14cb93b87b0/popup/scripts/popup.js:1632:5 DrawLoginUI/<@moz-extension://d059ac7f-1fe3-7649-b7ca-e14cb93b87b0/popup/scripts/popup.js:181:6 dispatch@moz-extension://d059ac7f-1fe3-7649-b7ca-e14cb93b87b0/popup/scripts/jquery.js:5182:16 add/elemData.handle@moz-extension://d059ac7f-1fe3-7649-b7ca-e14cb93b87b0/popup/scripts/jquery.js:4991:6 Line: 284, column: 3 main.js:1616 _unknownError resource://devtools/server/main.js:1616:5 onPacket resource://devtools/server/main.js:1764:29 receiveMessage resource://devtools/shared/transport/transport.js:735:7 enter resource://devtools/server/actors/utils/event-loop.js:118:5 enter self-hosted:981:17 _pushThreadPause resource://devtools/server/actors/thread.js:178:5 _pauseAndRespond resource://devtools/server/actors/thread.js:390:7 next self-hosted:1219:9 hit resource://devtools/server/actors/breakpoint.js:188:12 appAPI.CallCrossDomain moz-extension://d059ac7f-1fe3-7649-b7ca-e14cb93b87b0/popup/scripts/appapiclass.js:92:8 CheckLoginProcess moz-extension://d059ac7f-1fe3-7649-b7ca-e14cb93b87b0/popup/scripts/popup.js:1434:4 FireLogin moz-extension://d059ac7f-1fe3-7649-b7ca-e14cb93b87b0/popup/scripts/popup.js:1632:5 DrawLoginUI/< moz-extension://d059ac7f-1fe3-7649-b7ca-e14cb93b87b0/popup/scripts/popup.js:181:6 dispatch moz-extension://d059ac7f-1fe3-7649-b7ca-e14cb93b87b0/popup/scripts/jquery.js:5182:16 add/elemData.handle moz-extension://d059ac7f-1fe3-7649-b7ca-e14cb93b87b0/popup/scripts/jquery.js:4991:6 I can provide code snippets if needed, but since the error is only thrown after I add the breakpoint, I don't know what code would be helpful for leading to a solution. I'm hoping I have not missed something silly here, but I have searched for "window is null", "TypeError: window is null", "'frames: TypeError: windows is null" as well as other debugging searches in relation to jQuery and just can't find anything. Any help would be much appreciated.

Όλες οι απαντήσεις (1)

Shadow110
Shadow110
more options

Hi, Am sorry this forum is for Firefox Desktop and Laptop Support. Please see the appropriate places for help in debugging and development as well to see if you are meeting the new standards :