indexphp

Hi,
I am currently building my site.
Store + classifieds.
The site is still in the testing phase.
I installed Permalink Manager Lite once, everything worked perfectly.
I installed the plugin to basically change the product title which is in Arabic.
Having done a lot of testing on the site I decided to delete everything and reinstall wordpress again to put it online this time.
Before deleting everything I made several backups including a backup with the tool > export
I reinstalled the plugins and used the tool > import.
By activating the Permalink Manager Lite plugin I have “indexphp” which is added to all permalinks.
Example : https://souq-sarmada.com/indexphp/shop/
If I deactivate the Permalink Manager Lite plugin everything goes back to normal and the word “indexphp” disappears from all permalinks.
Here is a screenshot of Permalink Settings: https://ibb.co/XzHygsM
And here is a screenshot of Permalink Manager: https://ibb.co/JFbLwJD
Thank you.