Solved Can't add a file or a picture to a post

Hello
I own a non-commercial website about digital television. I use :

- Joomla! 3.9.25
- a template by Joomlashine (JSN Gruve PRO)
- Kunena 5.2.4
- PHP 7.3.27

Since 2 years, users can't add a picture anymore. It just doesn't work. I don't know if it comes from Joomla, JSN or Kunena. Or a wrong configuration,
I would like to be contacted by a Kunena-Administrator in order to get professional personalized support ($).
Is is possible?
Thanks in advance.
John

Hello,

We don't have paid support (on the right you have a button donate), the first check to made is to look in your browser developpement console and in the javascript tab if you some errors

Hello and thank you for your answer.
Honestly, I'm not so strong with Joomla. I can do certain things but that's it.
I''m willing to donate. No doubt. Depending on your time to fix the issue, I can adapt the amount.
My point is, I got this issue for 2 years now and I would like to provide you with an administrator access, so that you can check directly.
Is it possible?

Thanks

John

When the issue has started to appear, what did-you had done ? Did-you updated Kunena ? Changed some settings into Kunena ?

I can look, just put the data into [confidential*][/confidential*] tags without the *

Hello xillibit !
It woud just be great if Kunena Forum Users could add a picture to their posts.
Thank you very much in advance.

Hello,

I have checked on your site, when i do "New message" i have some javascript issues which prevent to load others javascript :

Uncaught TypeError: n.fancybox.defaults is undefined in fancybox-min.js:13:3122
<anonymous> yoursite.com/media/kunena/core/js/fancybox-min.js:13

Uncaught TypeError: e.fancybox.getInstance is not a function in fancybox-min.js:12:24201
<anonymous> yoursite.com/media/kunena/core/js/fancybox-min.js:12

I have tried to go on administrator page on your site but i have a 403 forbidden error

I have now access to your administrator part of your site, i have found that the issue that i had releved in my previous message is generated because the fancybox script is load in another time in your site. I have found that the plugin Theme Carousel is causing this, so i have disabled it.

There is another issue now, when i add an attachment into a message i have this error :

POST yoursite.com/forum/topic/task-upload.jso...5426de347cf6c7493b=1 [HTTP/1.1 404 Not Found 828ms]

The last issue that i had described in my message above is related to the following setting in Joomla! dashboard :

 

Can-i disable it to make some others tests ?