Ho provato a settare le varie opzioni di php, con la versione 7.1 e 7.2 (attuale) il sito è visibile, con la 7.3 e la 7.4 il sito da schermata bianca.
Invece cliccando su ispeziona elemento nella voce console vedo che genera questo errore
Uncaught TypeError: Cannot read property 'clientWidth' of undefined
at n.i.get_size (EMg_eMohj8hmLBH4MAVlIPOCu_U.js?bu=B7UF2QXoBeoFpwXtBboF:1)
at a._onDesiredSizeChanged (EMg_eMohj8hmLBH4MAVlIPOCu_U.js?bu=B7UF2QXoBeoFpwXtBboF:1)
at a.b._privates.defineProperty.defaultValue (EMg_eMohj8hmLBH4MAVlIPOCu_U.js?bu=B7UF2QXoBeoFpwXtBboF:1)
at e (EMg_eMohj8hmLBH4MAVlIPOCu_U.js?bu=B7UF2QXoBeoFpwXtBboF:1)
at a.y [as setDesiredSize] (EMg_eMohj8hmLBH4MAVlIPOCu_U.js?bu=B7UF2QXoBeoFpwXtBboF:1)
at new a (EMg_eMohj8hmLBH4MAVlIPOCu_U.js?bu=B7UF2QXoBeoFpwXtBboF:1)
at r (wnAk1dVXzea2lBJRXLa9OoeZj_0.js?bu=BLUFpQX3AboF:1)
at g (mapcontrol?callback=GetMap&key=AnC69Phz8JET7DTYatzzOqIXtDUbWM0A1bFMW6T-YBSaCUvI56fpD2hDzdZOUwZH:11)
at n.create (mapcontrol?callback=GetMap&key=AnC69Phz8JET7DTYatzzOqIXtDUbWM0A1bFMW6T-YBSaCUvI56fpD2hDzdZOUwZH:11)
at n._createInstance (mapcontrol?callback=GetMap&key=AnC69Phz8JET7DTYatzzOqIXtDUbWM0A1bFMW6T-YBSaCUvI56fpD2hDzdZOUwZH:11)
DevTools failed to load SourceMap: Could not load content for themes/core.js.map: HTTP error: status code 404, net::ERR_HTTP_RESPONSE_CODE_FAILURE