Unable to import anymore

Today, I am not able to import my items like I do every week. Last Monday it was working fine. I even tried with the same file as last week and same problem it is stopped directly.

Here is the con sole message: [Error] Failed to load resource: the server responded with a status of 500 () (index.php, line 0)

I didn't changed anything on the server 

Any suggestions?

hello what is you joomla version an flexi version ? did you update flexicontent ?

Just a precision, with another file that I need to import, the error occurs only after 245 items and not immediately as the first file.

Joomla 4.4.3 (new since last import without problems)
Flexicontent 4.2.1
 

Did you have update flexicontent between 2 imports ?

No.

I found that just Joomla has been updated from 4.4.2 to 4.4.3