Node Red for a complete beginner

HMMM i found the syslog file and found this tidbit that looks suspicious

16:39:16 beaglebone Node-RED[1067]: Your flow credentials file is encrypted using a system-generated key.
Feb 12 16:39:16 beaglebone Node-RED[1067]: If the system-generated key is lost for any reason, your credentials
Feb 12 16:39:16 beaglebone Node-RED[1067]: file will not be recoverable, you will have to delete it and re-enter
Feb 12 16:39:16 beaglebone Node-RED[1067]: your credentials.
Feb 12 16:39:16 beaglebone Node-RED[1067]: You should set your own key using the 'credentialSecret' option in
Feb 12 16:39:16 beaglebone Node-RED[1067]: your settings file. Node-RED will then re-encrypt your credentials
Feb 12 16:39:16 beaglebone Node-RED[1067]: file using your chosen key the next time you deploy a change.

also this entry was there
12 Feb 17:51:40 - [warn] Projects disabled : editorTheme.projects.enabled=false

What does this mean and what do I do
Larry