Fatal error: Class ‘Requests_Utility_CaseInsensitiveDictionary’ not Found in WordPress

I assume it’s a clean installation so I can think of two things:

  • The upload (installation) wasn’t complete
  • Some file permissions are not correct (folders: 755, files: 644)

I’d firstly try to remove all core files and re-upload everything.

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)