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.

TypeError: The expression cannot be converted to return the specified type.

See original GitHub issue

I have a file sending app that works fine on localhost with local testing but when hosted remotely even when the two browsers are on the same computer I get this error:

TypeError: The expression cannot be converted to return the specified type.

Which is thrown from here: https://github.com/feross/simple-peer/blob/master/index.js#L243

Not sure why it’s happening only on remote. If it helps the apps source is here: https://github.com/Arcath/file-from-me

Issue Analytics

State:
Created 4 years ago
Comments:8

Top GitHub Comments

3reactions

nwoltmancommented, Jul 22, 2019

I found the reason for this. Firefox respects the max message size of the peer it is connected to, so if you try to send data larger than the max message size, Firefox throws this error. The default max message size is 65535 if the peer does not provide it (and currently no browser provides it other than Firefox).

So if you’re sending data larger than 65535 bytes, this is probably the source of the error.

0reactions

t-mullencommented, Dec 13, 2019

Tracking in #546

Top Results From Across the Web

Xpath is invalid: TypeError: The expression cannot be ...

xpath is invalid : TypeError: The expression cannot be converted to return the specified type. The code I used is

The expression cannot be converted to return the specified type.

TypeError : The expression cannot be converted to return the specified type.

The expression cannot be converted to return the specified type

Missing ServiceWorker script gives confusing TypeError message - The expression cannot be converted to return the specified type.

Common issues and solutions - mypy 0.991 documentation

ImportError from circular imports · NameError: name "X" is not defined from forward references · TypeError: 'type' object is not subscriptable from types...

SQLSTATE values and common error codes - Db2 - IBM

01517, A character that could not be converted was replaced with a ... 10507, A type error was encountered processing an XPath or...