Warning: Compilation failed

I had to manually install with Plesk and the only page of my website that shows up is the Home Page. To view any page of my site I have to set it as the front page from the reading settings.

I get ‘Warning: Compilation failed’ on the plug-ins and other word press news menus on the dashboard.

It appears to all be from one error:
‘Warning: Compilation failed: characters with values > 255 are not yet supported in classes at offset 31 in /var/www/vhosts/leachandwalker.com/httpdocs/wp-includes/class-simplepie.php on line 11043’