My hosting provider recently upgraded the server my websites are running on and they are no longer working properly. No images including the site logo are being displayed and js packages such as CKeditor are not loading. I have checked in the system log and there seem to be lots of viewstate error such as the one below. Can anybody suggest a solution?
2022-03-02 17:46:05,605 ERROR 22.214.171.124 - en-GB - / - mojoPortal.Web.Global - Referrer(http://warringtonql.org.uk/Secure/Login.aspx?returnurl=%2fhome.aspx) useragent Mozilla/5.0 (Windows NT 6.1; ) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.85 Safari/537.36
System.Web.UI.ViewStateException: Invalid viewstate.
mojoPortal Version126.96.36.199 MSSQL
Operating SystemMicrosoft Windows NT 10.0.17763.0
ASP.NET Info4.0.30319.42000 Running in Full Trust
Server Time ZoneIndia Standard Time
Server Local Time(GMT 5.5) 18/03/2022 03:14:54
Greenwich Mean Time (GMT/UTC)17/03/2022 21:44:54