upload file error

Hi
I have last version of edocman on Joomla 3.x website.
An user has issues to upload any file in frontend: as he clicks on "submit" button to upload any file, it appears the HTTP 500 error page.
I cannot reproduce the problem using his account as on my side it works fine.

Do you have any suggestion?
it seems happen only on his laptop

thank you

Hi Giulia,
If it only happens on your Laptop, you need to check setting of local server to see if it allows to upload form with HTML code or submitting form with various fields ..etc?
Thanks
Dam

I resolved: it was the thumbnail image size (too big)