Hi, your website host possible has ftp address and connections please check in their help for that information and if so find a good graphical interfaced Ftp program. Only suggestion besides a refresh.

no i'm talking about a html form that i have created on my website

AmineBouhaddi said

no i'm talking about a html form that i have created on my website

Then supply the url please

can you please go on www.centrix.one and create an account after that. Login and go on Document on your left hand and try to upload a new document. do that using firefox.

Thanks

You may need to try a different forum -- see Where to go for developer support -- but to rule out a possible issue with corrupted or non-default settings:

New Profile Test

This takes about 3 minutes, plus the time to test your site.

Inside Firefox, type or paste about:profiles in the address bar and press Enter/Return to load it.

Click the Create a New Profile button, then click Next. Assign a name like July2018, ignore the option to relocate the profile folder, and click the Finish button.

After creating the profile, scroll down to it and click the Set as default profile button below that profile, then scroll back up and click the Restart normally button. (There are some other buttons, but please ignore them.)

Firefox should exit and then start up using the new profile, which will just look brand new. Skip over any invitation to Sync or active extensions so you get a clean test (just close those tabs).

Does your upload work any better in the new profile?

When you are done with the experiment, open the about:profiles page again, click the Set as default profile button for your normal profile, then click the Restart normally button to get back to it.

no the same probleme again :(

Probably a web development forum would be a better place to get help with this question.