SyntaxError: Unexpected end of JSON input after 3.10 update

SyntaxError: Unexpected end of JSON input after 3.10 update

by Kodo Mafija -
Number of replies: 7

Hi,

First of all - we're using system since 2.x ver, so sometimes some inner texts/ files might have different encoding etc . (maybe this could be related)

Now the probelm - we where absolutely fine on 3.8 without ANY TROUBLES , and after we updated to 3.10 + (currently (Build: 20201204))  popup with SyntaxError: Unexpected end of JSON input after 3.10 update started popping out for many teachers and pupils . (see screenshots) .

Also i attach server side error log , which alo became huge after update.

PS theres also these line in CRON error execution :
func=xmlSecCheckVersionExt:file=xmlsec.c:line=188:obj=unknown:subj=unknown:error=19:invalid version:mode=abi compatible;expected minor version=2;real minor version=2;expected subminor version=25;real subminor version=26

If you have any clues where to look for troubles - please let me know smile

Thanks in advance !

Attachment moodle_bug1.jpg
Attachment moodle_bug2.jpg
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In reply to Kodo Mafija

Re: SyntaxError: Unexpected end of JSON input after 3.10 update

by Howard Miller -
iTaba kei {Sa} iTaba kei {Sa} iTaba kei {Sa} iTaba kei {Sa} iTaba kei {Sa}
This is usually a symptom rather than the problem - most likely the Javascript is trying to parse an error message

- Switch on Debugging
- Switch on your browser's Javascript Console
- reproduce the problem

Anything in the console (red errors)? Anything in your web server's error log?
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In reply to Howard Miller

Re: SyntaxError: Unexpected end of JSON input after 3.10 update

by Kodo Mafija -
Hi
With debug enabled - i'm getting same picture, with no ERRORs only 2 warnings in console . and just some more text in popup which doesnt makes anything clearer sad

Server error has NO ENTRIES during this .

(In fact i can provide with URL / Access personally if you think you can help me on this smile
Attachment moodle_bug3.jpg
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In reply to Howard Miller

Re: SyntaxError: Unexpected end of JSON input after 3.10 update

by Kodo Mafija -
I Found out that the probable error is genereting here :

https://moodle.MYSITE/lib/ajax/service.php?sesskey=0JkDz23brR&info=media_videojs_get_language

as it returns :

{"error":"Coding error detected, it must be fixed by a programmer: Invalid json in request: Syntax error","errorcode":"codingerror","stacktrace":null,"debuginfo":null,"reproductionlink":null}

However - no error on serverside is generated....
ANy ideas ?
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In reply to Kodo Mafija

Ats.: Re: SyntaxError: Unexpected end of JSON input after 3.10 update

by Danutė Pranckutė -

I do not have solution for u, but did you notice that this error pop-up appears only using LT language? If you switch to english or german pop-up disappear.

In my case - this error show only where video is integrated, and video does not play.

Still no answer how to fix smile

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In reply to Danutė Pranckutė

Re: Ats.: Re: SyntaxError: Unexpected end of JSON input after 3.10 update

by Kodo Mafija -
Yes, English seems to fix the problem, but the fact that weve got all teachers on Lithuanian interface, and they are all facing this issue sad
Another link which shows similar bug on MARKING page with no video attached
Attachment bugmore1.jpg
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In reply to Danutė Pranckutė

Re: Ats.: Re: SyntaxError: Unexpected end of JSON input after 3.10 update

by Yngvi Pétursson -

It looks like the same issue affects other languages as well, like Icelandic.

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In reply to Kodo Mafija

SyntaxError: Unexpected end of JSON input after 3.10 update

by Paul Holden -
iTaba kei {Sa} iTaba kei {Sa} iTaba kei {Sa} iTaba kei {Sa} iTaba kei {Sa} iTaba kei {Sa} iTaba kei {Sa}
Hi all, this has been previously reported at MDL-70535 - feel free to follow along there smile
Average of ratings:Useful (2)