Attempting to reopen a chart gives Invalid mime error

[shadow7412]

Create a page, and place {{#drawio:TestChart}} in it. Save page.
Edit the chart, and save.
At this point there is a gaping white whole where the chart was. A refresh brings it up however.

However the real fun starts now - when I go to edit the newly created chart, I get an invalid mime type error.

The full error message is:

Invalid mime type when loading image from wiki:
Actual: image/png / Expected: image/svg+xml
Image: /images/thumb/2/23/TestChart.drawio.svg/121px-TestChart.drawio.svg.png?ts=20170831044519

It seems possible that for some reason, draw.io is being sent the url to the png version rather that svg it desires. I have not set $wgDrawioEditorImageType so svg should still be the default. Also I'm using the tag in it's simplest form; {{#drawio:TestChart}} so there's no |png even though I'd be surprised if that were the cause.

[strikegun]

the pull request solves the problem. look at it.

[shadow7412]

I just tried out your PR @strikegun

When I go to save, I'm getting this error;

The wiki returned the follwing error when uploading:
[d1afff0368b2aceb877d5eb3] Exception caught: Could not open lock file for "mwstore://local-backend/local-public/2/21/TestChart.drawio.svg".

There is a typo in that message (follwing), but that's a side issue to the fact I'm getting this message in the first place :P

Any ideas?

[strikegun]

just google for the error.
I found https://www.mediawiki.org/wiki/Topic:U9uj8dpuz421v0yu
Seems trouble with your permissions? After I changed the line like in the pull request, the extensions works fine here at mine linux apache mediawiki.

[shadow7412]

I admit that was unnecessarily lazy of me. That was indeed the issue.

I still have the problem where just after editing a new diagram the image is blank (solved with a refresh as above) but now I can actually edit them, so this PR solves the problem it set out to solve.

Thanks :)