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:
How can I let Guests Answer to Posts
Where can I see user IP addresses in Nodebb 0.9.0 ?
Error when I do "npm install"
Solved Can I change the logo image and the logo's link ?
Where do I put my "style" element?
Again about "invalid csrf token"
Do NOT Show "Log in to post" Button If User Can't Post to that Category
Able to see " Register ", " Login "
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