Unknown command hello? #chat. Try the help command for more information.

Bot encountered an error. Here is the stack trace: 
Traceback (most recent call last):
  File "/root/matrix-eno-bot/bot_commands.py", line 624, in _os_cmd
    run = subprocess.Popen(
  File "/usr/local/lib/python3.8/subprocess.py", line 854, in __init__
    self._execute_child(args, executable, preexec_fn, close_fds,
  File "/usr/local/lib/python3.8/subprocess.py", line 1702, in _execute_child
    raise child_exception_type(errno_num, err_msg, err_filename)
FileNotFoundError: [Errno 2] No such file or directory: 'hello.sh'

Unknown command testing. Try the help command for more information.

Unknown command testing. Try the help command for more information.

Unknown command 312. Try the help command for more information.