Suddenly can't activate mujoco

[sash-a]

I was working on a project and suddenly after I restarted my PC I am unable to activate mujoco through julia, however I can run mujoco-py perfectly fine and ./simulate works fine, so I'm wondering if you can help me with the issue I'm having with this package? (I have tried multiple restarts after this popped up)

The warning I get:

┌ Warning: 
│     No key found. Please set the env variable MUJOCO_KEY_PATH to point to a valid `mjkey` file.
│     Alternatively, use `mj_activate(path_to_mjkey.txt)` to manually activate.
└ @ MuJoCo.MJCore ~/.julia/packages/MuJoCo/gihZP/src/MJCore/MJCore.jl:63

However:

$ echo $MUJOCO_KEY_PATH                                
~/.mujoco/mjpro150/mjkey.txt

$ cat $MUJOCO_KEY_PATH   
MuJoCo Pro Individual license activation key, number 7705, type 6.

Issued to Everyone.

Expires October 31, 2021.
...

Also running mj_activate("~/.mujoco/mjpro150/mjkey.txt") instantly kills the repl and shows this MuJoCoException(Could not open activation key file ~/.mujoco/mjpro150/mjkey.txt). I have checked and all permissions are available on the file.

Running Ubuntu 21.04

[yj-Tang]

Hi @sash-a, I met with the same problem. Have you found the solution?

[sash-a]

Been ages since I used this package. I would honestly just access mujoco through pycall, seems the most stable and it's how reinforcementlearning.jl does it

[yj-Tang]

Make sense. Thanks for the reply!