After trying several things and after several reboots, I started on a clean reboot where plex is up and running. I then uninstalled the plex docker from the apps section, then I wen to settings, dockers, and disabled dockers, deleted the docker image by putting the check in the box, and then re-enabled dockers. I then went back to the apps section, I went to the previously installed dockers and reinstalled plex. The download and install completed and I am now up and running the newest version that I could not get to install before.