An unexpected error occurred.

Hi everyone,

i have some troubles with my WP site (https://vg13.ch/home/).

Two weeks ago it started reporting this error: An unexpected error occurred. Something may be wrong with www.remarpro.com or this server’s configuration. If you continue to have problems, please try the support forums.

Site stats, WP uploads and other themes are the sections that reports the error.

I have no deep coding capabilities, so every super-detailed step-by-step infos are much appreciated.

Thanks.
Tom