You may attempt to login to the RCE and see an image like this on a gray screen.
In most cases, this is caused by a line added to the user's .bashrc file in their home directory on the RCE.
SSH to the RCE and check your .bashrc file in your home directory. You may see a line like this:
# added by Anaconda3 installer
Either remove these lines or comment out the "export" line, then save the file.
Users can already use Anaconda Navigator or Shell from the RCE by going to Applications->Programming.