Same problem here; leads to massive load on the server when also using cacheing plugins as they endlessly try to retrieve the file.
Workaround for now seems to be to create the file at the location (i.e. css/mep_re_style.css inside the plugin directory). But for a long-term solution the plugin should create the file itself, even if it’s empty or don’t enqueue the style inside inc/MPWEM_Dependencies.php line 164 (inside frontend_enqueue ).
Hello @neohuman & @mailapyst
Please update the plugin to the latest version (4.4.8). This issue has been fixed in the latest version.
Best Regards