We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

সহায়তা খুঁজুন

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

আরও জানুন

Sync Unknown Error: forms failed: ReferenceError: dbConnection is not defined

  • 1 উত্তর
  • 1 এই সমস্যাটি আছে
  • 1 দেখুন
  • শেষ জবাব দ্বারা guigs

more options

I have never had success with Firefox sync and it's getting really frustrating. The sync log appears to fail at this line:

Sync.ErrorHandler DEBUG forms failed: ReferenceError: dbConnection is not defined (resource://gre/modules/FormHistory.jsm:407:4) JS Stack trace: dbCreateAsyncStatement@FormHistory.jsm:407:5 < makeSearchStatement@FormHistory.jsm:274:10 < formHistorySearch@FormHistory.jsm:781:16 < FormWrapper._searchSpinningly@forms.js:51:5 < FormStore.prototype.getAllIDs@forms.js:149:19 < SyncEngine.prototype._syncStartup@engines.js:919:22 < SyncEngine.prototype._sync@engines.js:1518:7 < WrappedNotify@util.js:148:21 < Engine.prototype.sync@engines.js:668:5 < _syncEngine@enginesync.js:199:7 < sync@enginesync.js:149:15 < onNotify@service.js:1295:7 < WrappedNotify@util.js:148:21 < WrappedLock@util.js:103:16 < _lockedSync@service.js:1285:12 < sync/<@service.js:1277:14 < WrappedCatch@util.js:77:16 < sync@service.js:1265:5

any ideas how to fix?

Thanks.

I have never had success with Firefox sync and it's getting really frustrating. The sync log appears to fail at this line: Sync.ErrorHandler DEBUG forms failed: ReferenceError: dbConnection is not defined (resource://gre/modules/FormHistory.jsm:407:4) JS Stack trace: dbCreateAsyncStatement@FormHistory.jsm:407:5 < makeSearchStatement@FormHistory.jsm:274:10 < formHistorySearch@FormHistory.jsm:781:16 < FormWrapper._searchSpinningly@forms.js:51:5 < FormStore.prototype.getAllIDs@forms.js:149:19 < SyncEngine.prototype._syncStartup@engines.js:919:22 < SyncEngine.prototype._sync@engines.js:1518:7 < WrappedNotify@util.js:148:21 < Engine.prototype.sync@engines.js:668:5 < _syncEngine@enginesync.js:199:7 < sync@enginesync.js:149:15 < onNotify@service.js:1295:7 < WrappedNotify@util.js:148:21 < WrappedLock@util.js:103:16 < _lockedSync@service.js:1285:12 < sync/<@service.js:1277:14 < WrappedCatch@util.js:77:16 < sync@service.js:1265:5 any ideas how to fix? Thanks.

সমাধান চয়ন করুন

Hi deeptii, Thank you for reporting this issue. This is an issue that we saw in a Nightly version and has been fixed. What the error means is that the database is not accessible on the local computer's Firefox profile folder.

In order to check the permissions on the Firefox profile folder you can go to:

  1. Open a new window in Firefox and click on the Firefox Menu.
  2. Click on the question mark at the bottom of the menu
  3. Next click on the 'Troubleshooting' information and a new tab should load called about:support
  4. From here there is a button next to "Profile Folder", this will open up the directory where the profile folder is. If its not showing: Profiles - Where Firefox stores your bookmarks, passwords and other user data
  5. Right click on the folder and click "Properties". From this menu make sure that it is not set to "Read Only" (This may be a bit different in Windows 10 please search the Microsoft help if this is no longer in this menu)
  6. Restart Firefox, does the error come up again?

The other work around is to delete this folder in the profile: formhistory.sqlite (This file contains form filled content, simply removing it from the directory will create a new profile as well when you restart Firefox, if there is a concern for dataloss )

Please also post back with these results as well as please copy the information that appears in the about:support page.

Thank you!

প্রেক্ষাপটে এই উত্তরটি পড়ুন। 👍 0

All Replies (1)

more options

চয়ন করা সমাধান

Hi deeptii, Thank you for reporting this issue. This is an issue that we saw in a Nightly version and has been fixed. What the error means is that the database is not accessible on the local computer's Firefox profile folder.

In order to check the permissions on the Firefox profile folder you can go to:

  1. Open a new window in Firefox and click on the Firefox Menu.
  2. Click on the question mark at the bottom of the menu
  3. Next click on the 'Troubleshooting' information and a new tab should load called about:support
  4. From here there is a button next to "Profile Folder", this will open up the directory where the profile folder is. If its not showing: Profiles - Where Firefox stores your bookmarks, passwords and other user data
  5. Right click on the folder and click "Properties". From this menu make sure that it is not set to "Read Only" (This may be a bit different in Windows 10 please search the Microsoft help if this is no longer in this menu)
  6. Restart Firefox, does the error come up again?

The other work around is to delete this folder in the profile: formhistory.sqlite (This file contains form filled content, simply removing it from the directory will create a new profile as well when you restart Firefox, if there is a concern for dataloss )

Please also post back with these results as well as please copy the information that appears in the about:support page.

Thank you!