How to fix Drupal issue: “This field has been disabled because you do not have sufficient permissions to edit it”.

In this post we'll see how to fix Drupal issue:  “This field has been disabled because you do not have sufficient permissions to edit it”. While I was trying to edit a content, I noticed that Drupal was not allowing me to edit the content saying  “This field has been disabled because you do not have sufficient permissions to edit it”. I checked the "Authoring Information" and