I upgraded to NodeBB 8.1 and re-install all npm modules. All seems OK.
But now the Guest can not see "image" and click the "broken link" , then "not-allowed" message is shown.
Possibly related to this admin option:
Solved Finished the installation but can't see NodeBB in a web browser
Unregistred user can't see picture in topics
Can't go beyond the "Congratulations" page
after upgrade problems "bgColor"
Custom background using "Custom Class" + "Custom CSS"?
Able to see " Register ", " Login "
Emoji doesn't work - running "Update Files" from ACP results in "connection refused"
Error when I do "npm install"