Devtools sometimes won't open on specific page

👁 Image	Maël Lavault Reporter
	Description • 10 years ago

User Agent: Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:47.0) Gecko/20100101 Firefox/47.0 Build ID: 20160606100246 Steps to reproduce: Tried to open devtools after webpage reload (was doing local dev). It opens if I go to another tab but won't open except if i close the tab and reopen my page in another tab. Actual results: Nothing. Here is the browser console stack: promise chain failed to handle a rejection. Did you forget to '.catch', or did you forget to 'return'? See https://developer.mozilla.org/Mozilla/JavaScript_code_modules/Promise.jsm/Promise Date: Fri Jun 17 2016 11:50:57 GMT+0200 (CEST) Full Message: TypeError: this._toolbox is null Full Stack: InspectorPanel.prototype.selection@resource://gre/modules/commonjs/toolkit/loader.js -> resource://devtools/client/inspector/inspector-panel.js:130:5 nsContextMenu.prototype.inspectNode/<@chrome://browser/content/nsContextMenu.js:576:11 Handler.prototype.process@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:937:23 this.PromiseWalker.walkerLoop@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:816:7 this.PromiseWalker.scheduleWalkerLoop/<@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:750:11 inspector-panel.js:130:0 A promise chain failed to handle a rejection. Did you forget to '.catch', or did you forget to 'return'? See https://developer.mozilla.org/Mozilla/JavaScript_code_modules/Promise.jsm/Promise Date: Fri Jun 17 2016 11:51:03 GMT+0200 (CEST) Full Message: TypeError: this._toolbox is null Full Stack: InspectorPanel.prototype.selection@resource://gre/modules/commonjs/toolkit/loader.js -> resource://devtools/client/inspector/inspector-panel.js:130:5 nsContextMenu.prototype.inspectNode/<@chrome://browser/content/nsContextMenu.js:576:11 Handler.prototype.process@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:937:23 this.PromiseWalker.walkerLoop@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:816:7 this.PromiseWalker.scheduleWalkerLoop/<@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:750:11 inspector-panel.js:130:0 A promise chain failed to handle a rejection. Did you forget to '.catch', or did you forget to 'return'? See https://developer.mozilla.org/Mozilla/JavaScript_code_modules/Promise.jsm/Promise Date: Fri Jun 17 2016 11:51:14 GMT+0200 (CEST) Full Message: TypeError: this._toolbox is null Full Stack: InspectorPanel.prototype.selection@resource://gre/modules/commonjs/toolkit/loader.js -> resource://devtools/client/inspector/inspector-panel.js:130:5 nsContextMenu.prototype.inspectNode/<@chrome://browser/content/nsContextMenu.js:576:11 Handler.prototype.process@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:937:23 this.PromiseWalker.walkerLoop@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:816:7 this.PromiseWalker.scheduleWalkerLoop/<@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:750:11 inspector-panel.js:130:0 A promise chain failed to handle a rejection. Did you forget to '.catch', or did you forget to 'return'? See https://developer.mozilla.org/Mozilla/JavaScript_code_modules/Promise.jsm/Promise Date: Fri Jun 17 2016 11:50:41 GMT+0200 (CEST) Full Message: TypeError: this._toolbox is null Full Stack: InspectorPanel.prototype.selection@resource://gre/modules/commonjs/toolkit/loader.js -> resource://devtools/client/inspector/inspector-panel.js:130:5 nsContextMenu.prototype.inspectNode/<@chrome://browser/content/nsContextMenu.js:576:11 Handler.prototype.process@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:937:23 this.PromiseWalker.walkerLoop@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:816:7 this.PromiseWalker.scheduleWalkerLoop/<@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:750:11 inspector-panel.js:130:0 refresh: Checking updates for: WorkPoller batch.js:417:165 ajax : executing request for workAllData batch.js:417:165 Expected results: Devtools should open.

👁 Image	Vlad Bacia-Mociran [:VladB]
	Comment 1 • 10 years ago

I'm moving the issue to Firefox - Developer Tools component. Activity Streams is an add-on and has nothing to do with your issue.

👁 Image	Maël Lavault Reporter
	Comment 2 • 10 years ago

(In reply to Vlad Bacia [:VladB] from comment #1) > I'm moving the issue to Firefox - Developer Tools component. Activity > Streams is an add-on and has nothing to do with your issue. Yes sorry I forgot to select the right component. Thanks !

👁 Image	J. Ryan Stinnett [:jryans] (Use needinfo, replies may be slow)
	Comment 3 • 9 years ago

Thanks for the report! Can you provide more details about the context? Do you see this on every site or only specific pages? (I wasn't entirely sure from your description.)

👁 Image	Maël Lavault Reporter
	Comment 4 • 9 years ago

Yes, I see it a lot on the new website we are developing for our company. It's an isomorphic react app. I see it there a lot because I do a lot of refresh on the page. I don't know if it happens on other pages.

👁 Image	Patrick Brosset <:pbro>
	Comment 5 • 9 years ago

Could this be a duplicate of bug 983386? It looks that way to me. Mael: can you confirm that this happens when you reload the page after Firefox had displayed an error page?

👁 Image	Patrick Brosset <:pbro>
	Comment 6 • 9 years ago

No answers from Mael after a few weeks. Going to close this as dupe of bug 983386 and leave the needinfo. We can always change this later.

👁 Image	Maël Lavault Reporter
	Comment 7 • 9 years ago

Yes I confirm, it is a dupe, I missed the needinfo request, sorry !

👁 Image	BMO Automation
	Updated • 8 years ago