Alright so basically, everything was working fine until we pulled the git repo from master on Monday (perhaps we shouldn't have?). I do not have access to the server console so I cannot tell you precisely which git hash we're on.
Since then, users on our forums cannot change their account pictures. This pops up in the NodeBB log everytime a user tries to change their picture:
29/10 14:06  - error: unable to delete picture /tmp/ZBXRoFYlE-3oKz3fQst8hjbH.jpg
Could it be a permission issue? Or is it an issue with NodeBB itself?