Maybe rare bug: archive/data.pkl deleted by ctrl-c ? unable to use that checkpoint

> python train.py task=Ant headless=True  checkpoint=cp.pth     
...
=> loading checkpoint '/home/stuart/repos/IsaacGymEnvs/isaacgymenvs/cp.pth'
Exception [enforce fail at inline_container.cc:222] . file not found: archive/data.pkl when trying to execute <function load at 0x7f83cd854e60> with args:('/home/stuart/repos/IsaacGymEnvs/isaacgymenvs/cp.pth',) and kwargs:{}...
Waiting 1 before trying again...
Exception [enforce fail at inline_container.cc:222] . file not found: archive/data.pkl when trying to execute <function load at 0x7f83cd854e60> with args:('/home/stuart/repos/IsaacGymEnvs/isaacgymenvs/cp.pth',) and kwargs:{}...
Waiting 2 before trying again...

i got this once after ending a training with ctrl-c. it didn’t start working again until i started training over, instead of trying to re-use a checkpoint (that checkpoint probably got overwritten so idk if it would have worked later or not).

not a big deal for me, just passing this along. maybe a poorly timed termination does something bad rarely