When installing themes from the PrestaShop admin backend, upload failures or timeouts are almost always caused by restrictive PHP server configuration. You can adjust the parameters below in php.ini.
Key PHP parameters to modify:
- upload_max_filesizeThis sets the maximum size for a single uploaded file. It needs to be larger than your theme ZIP file.
- post_max_sizeDefines the total size of POST data. This value must be bigger than upload_max_filesize.
- max_execution_timeControls…