question-mark
Stuck on an issue?

Lightrun Answers was designed to reduce the constant googling that comes with debugging 3rd party libraries. It collects links to all the places you might be looking at while hunting down a tough bug.

And, if you’re still stuck at the end, we’re happy to hop on a call to see how we can help out.

Uncaught TypeError: Cannot read property 'length' of undefined in Chrome 48

See original GitHub issue

As of Chrome 48 (specifically tested on 48.0.2564.97), the following error appears upon initialization

Messenger()

yields…

Uncaught TypeError: Cannot read property 'length' of undefined (line 840)

Issue Analytics

  • State:open
  • Created 8 years ago
  • Comments:7 (1 by maintainers)

github_iconTop GitHub Comments

1reaction
kjantzercommented, Jul 12, 2016

Is no one else having this issue? Now on Chrome 51 and issue still exists. Even with 1.5

0reactions
leompeterscommented, Jun 26, 2017

Got it!!! My similar issue was gone with UnderscoreJS VERSION 1.4.3 and BackboneJS VERSION 0.9.10.

Read more comments on GitHub >

github_iconTop Results From Across the Web

Cannot Read Property Length of Undefined in JavaScript
The JavaScript TypeError: Cannot read property 'length' of undefined occurs when the length property is read on an undefined variable.
Read more >
Getting error: "Uncaught TypeError: Cannot read property ...
There is no "responseJSON" in the object that you have receive, and this is why the error is failing on "length" is undefined:...
Read more >
Typeerror: Cannot Read Property 'length' of Undefined
The simplest fix to this error is to make sure we are defining what we want to compare length to, so we need...
Read more >
Cannot read properties of undefined (reading 'length') - TrackJS
This error can be thrown for a lot of reasons, as it is incredibly common to reference the length property of string or...
Read more >
TypeError: Cannot read property 'length' of Undefined in JS
The "Cannot read property 'length' of undefined" error occurs when accessing the length property on an undefined value. To solve the error, make...
Read more >

github_iconTop Related Medium Post

No results found

github_iconTop Related StackOverflow Question

No results found

github_iconTroubleshoot Live Code

Lightrun enables developers to add logs, metrics and snapshots to live code - no restarts or redeploys required.
Start Free

github_iconTop Related Reddit Thread

No results found

github_iconTop Related Hackernoon Post

No results found

github_iconTop Related Tweet

No results found

github_iconTop Related Dev.to Post

No results found

github_iconTop Related Hashnode Post

No results found