Increase these values to match the size of the files you are trying to upload. Don't forget to restart your web server (Apache or Nginx) after making changes. 2. Verify Folder Permissions (CHMOD)

We have successfully identified and resolved an issue preventing users from uploading files within the Katsem module. Previously, upload attempts would result in an error state (or silent failure), preventing assets from being attached to records.

Instead of blacklisting known bad files (like stopping .exe or .php ), the logic was flipped to a strictly controlled . Only safe document and media extensions—such as .jpg , .png , and .pdf —are now permitted. 2. Strict MIME Type and Magic Number Validation

Locate your php.ini file (or create a .htaccess file if you are on shared hosting) and update the following values:

Troubleshooting the Katsem File Upload Error: Causes and Proven Fixes

Here is exactly what was patched:

Is the file too large? Try uploading a very small file (e.g., a 10KB text file) to test if the system works generally.

If you are using an Apache server, a rule in your .htaccess file might be limiting request lengths or blocking certain types of data transfers.