I tried to work on my database when I got a DB Error: no such field. I can't access my contacts at all. I can search for them, they appear and everything else works. I looked up the error and I found out that I should update civi. I followed the instructions from https://wiki.civicrm.org/confluence/display/CRMDOC/Upgrading+CiviCRM+for+Wordpress#UpgradingCiviCRMforWordPress-4.RuntheUpgradescript .
But after following all the steps and putting in the update URL I still get an error saying that I have already upgraded to version 4.7.17. I don't understand what is going on. Can anyone help? I know that the guide is for 4.7+ but I am not sure if that applies for 5.0 too.