Traceback (most recent call last):
  File "/home/user/.local/lib/python3.9/site-packages/electrum/util.py", line 1107, in run_with_except_hook
    run_original(*args2, **kwargs2)
  File "/home/user/.local/lib/python3.9/site-packages/electrum/plugin.py", line 212, in run
    time.sleep(0.1)
ValueError: sleep length must be non-negative