I finally got the error fixed.
here's what happened, I am running a Plesk Onyx server, and installed the NodeJS update according to this guide:

And while everything looked good within Plesk, when I ran the command:

node -v

the old v8.9.1 of NodeJS would show as being current...

so all I did was this:

nvm use 10.15
npm install
npm rebuild

now everything is finally running just fine again

ah, I didn't post, because it's virtually identical to the previous output:

@PitaJ said in image upload issues:

npm rebuild --build-from-source

still get the error, unfortunately

ERROR
Something went wrong while parsing server response

here's the full output:

I then also chown the NodeBB directory, then:

systemctl stop nodebb
systemctl start nodebb

I have also update to NodeBB v1.1.2 and still have the same issue

@PitaJ still no luck
Im running on Centos 7 if that makes any difference

I recently upgraded from nodejs 9.10.1 to 10.15.0, and the problem has come back

ERROR
Something went wrong while parsing server response

[Error] Failed to load resource: the server responded with a status of 502 () (upload, line 0)
https://support.sweetpproductions.com/api/post/upload

I managed to get the uploads working by adding the following to my Apache & nginx Settings on the Additional nginx directives in my Plesk Onyx panel:

location / {
	proxy_set_header X-Real-IP $remote_addr;
	proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
	proxy_set_header X-Forwarded-Proto $scheme;
	proxy_set_header Host $http_host;
	proxy_set_header X-NginX-Proxy true;

	proxy_pass http://127.0.0.1:4567;
	proxy_redirect off;

	# Socket.IO Support
	proxy_http_version 1.1;
	proxy_set_header Upgrade $http_upgrade;
	proxy_set_header Connection "upgrade";
}

im still getting 502 errors when trying to upload:

[Error] Failed to load resource: the server responded with a status of 502 () (upload, line 0)

https://support.sweetpproductions.com/api/post/upload

I fixed the deletion of orphaned files by changing file permissions on my NOdeBB install, but I still can't upload new images.

Im having trouble with image uploads, and always get this:

ERROR
Something went wrong while parsing server response

I also get this error when trying to delete orphaned images from the Manage/Uploads admin page:

×ERROR
EACCES: permission denied, unlink '/var/www/vhosts/.../NodeBB/public/uploads/files/1540629625930-4c7e9f63-94d1-4d0f-a73b-9b77513956e1-image.png'

maybe its a permissions issue
the public folder in my install is owned by root, is that correct?