Pending invitations are invitations that have not yet been accepted or rejected by invited collaborators. If you want to remove/re-send a pending collaboration invitation, go to the folder/file and look at the Collaborators panel on the right.  Here you will see a list of all confirmed and pending collaborators.


Click the ellipses (...) beside the collaborator's email address.


Resend Invite.png



This will bring up a menu with options to Resend Invite or Remove the collaborator.