Add LTI developer key but come with error code 422

[yuling3086]

Hi,

I try to add a LTI developer key as below but once I click submit it will have error with error code 422 .

May I know what caused this?

[rkahn]

Having same issue.  Did you ever figure it out?

[dtod]

Hmmm....me too. In my case with SpringShare's libapps json url. 

[dtod]

Vaguely wondered if it was because the content is gzipped, but that would be silly.