hi gurus, 

Save button hangs and changes are not saved. It is happening quite often. Looking at the browser console it shows me following error messages.

1. Uncaught TypeError: Cannot read property 'destroy' of null
    at HTMLDocument.<anonymous> (VM306 questionedit.js:36)
    at HTMLDocument.dispatch (jquery-3.5.1.min.js:2)
    at HTMLDocument.v.handle (jquery-3.5.1.min.js:2)
    at pjax. combined. min. js:1
   ...
2. DevTools failed to load SourceMap: Could not load content for https://www/tmp/assets/81494240/bootstrap.min.css.map: HTTP error: status code 404, net::ERR_HTTP_RESPONSE_CODE_FAILURE
3. PJAX -> No JSON found. If you expected it there was an error. pjax. combined .min .js:1

do you know what might cause these sorts of errors and hanging of save action?

thanks.

LimeSurvey version and build number ?

Version 4.3.34

following is the culprit message 

VM166 adminbasics.min.js:1 TypeError: Cannot read property 'id' of null
    at t.<anonymous> (VM227 questiongroupedit.js:1046)
    at invokeWithErrorHandling (VM166 adminbasics.min.js:1)
    at t.e.$emit (VM166 adminbasics.min.js:1)
    at t.value (VM166 adminbasics.min.js:1)
    at HTMLAnchorElement.run (VM166 adminbasics.min.js:1)
    at HTMLDocument.dispatch (jquery-3.5.1.min.js:2)
    at HTMLDocument.v.handle (jquery-3.5.1.min.js:2)

hi again this looks like browser specific.

on Mozilla 87.0 (64-bit) it is responding.
but on Chrome Version 89.0.4389.114 (Official Build) (64-bit)
is still hang

admin panel opened with Mozilla hangs too so to say it is NOT browser specific. Errors on Mozilla.

1. Uncaught TypeError: e.instance is null
    mounted questiongroupedit.js:5696
    jQuery 2
    d pjax.combined.min.js:1
    a pjax.combined.min.js:1
    d pjax.combined.min.js:1
    d pjax.combined.min.js:1
    value pjax.combined.min.js:1
    v pjax.combined.min.js:1
    attachLink pjax.combined.min.js:1

2. TypeError: t is null
    mounted questiongroupedit.js:111691
    VueJS 2
    value eventbus.js:15
    run save.js:74
    jQuery 2

3. This is everywhere
Cookie “_gid” will be soon treated as cross-site cookie against URL because the scheme does not match.

Can you update to 4.4 ?

surveys containing some sort of JS in the question field seems to hang on save action while other surveys without JS are saving as if nothing happened.

You mean : if there are javascript inside question text : it broke, else it's OK ?

I think there are an issue with HTML not filtered in 4.X some time ago.

 

actually it is NOT related to JS. Survey without JS are not saving too. It is hanging without any reason. New survey created adding simple questions then it refuses to save.

whenever it is hang following message always there in browser console.

VM1023 adminbasics.min.js:1 TypeError: Cannot read property 'id' of null
    at t.<anonymous> (VM1032 questiongroupedit.js:1046)
    at invokeWithErrorHandling (VM1023 adminbasics.min.js:1)
    at t.e.$emit (VM1023 adminbasics.min.js:1)
    at t.value (VM1023 adminbasics.min.js:1)
    at HTMLAnchorElement.run (VM1023 adminbasics.min.js:1)
    at HTMLDocument.dispatch (jquery-3.5.1.min.js:2)
    at HTMLDocument.v.handle (jquery-3.5.1.min.js:2)

wrote:

Can you update to 4.4 ?
 

And can you activate debug mode and check the error shown on HTTP XHR request ?