SSHFC failed to mount : Operation not permitted

I'm trying to do a SSHFS mount on the external server (I don't have root permissions but I have permissions to my specific folder named the same thing as my username). However I'm getting the error which seems to be around the permissions on my local device:

mount_macfuse: fuse: mount failed with errro: 1 failed to mount /Users/myusername@/dev/macfuse1: Operation not permitted

This is the line I'm executing in the terminal (i've replaced my credentials and name of my useraccount)

sshfs -o password_stdin,transform_symlinks myusername@theservername:/home/username/project/env/bin ~/ -p 2020 <<< "mypassword"