A serious error occurred please contact the administrator

A serious error occurred please contact the administrator

If you search “A serious error occurred please contact the administrator“, you will see many posts. There are more than one scenarios of this error. I have tried to consolidate most obvious cases of this error.

Scenario 1 (I was facing this issue): Social Media is disabled in your configuration file but related items do exist in CORE database.

Error in log file: Error processing command url:/-/speak/request/v1/expeditor/ExperienceEditor.Social.SocialCenter.GetMessagesCount error:System.InvalidOperationException: Could not retrieve request class for url:/-/speak/request/v1/expeditor/ExperienceEditor.Social.SocialCenter.GetMessagesCount at Sitecore.ExperienceEditor.Speak.Server.RequestHandler.Process(HttpContext context) at Sitecore.ExperienceEditor.Speak.Server.RequestHandler.ProcessRequest(HttpContext context)

Solution: Remove these two items from CORE DB:

  • /sitecore/content/Applications/Content Editor/Ribbons/Chunks/SocialSocial
  • /sitecore/content/Applications/WebEdit/Ribbons/WebEdit/Page Editor/SocialSocial

Reference: https://community.sitecore.net/developers/f/5/t/1341 

Scenario 2: URL Rewrite issue with SPEAK request

Solution: Well explained in given blog (However, this is not the problem I was facing).


Scenario 3: Issue while switching between Sheer UI and SPEAK modes in Experience Editor.

Solution: https://kb.sitecore.net/articles/359871

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