Traceback (most recent call last):
  File "obw_platform/backtester_core_speed3_veto_universe_2.py", line 382, in <module>
    main()
  File "obw_platform/backtester_core_speed3_veto_universe_2.py", line 62, in main
    con = connect_db(cfg["cache_db"])
  File "obw_platform/backtester_core_speed3_veto_universe_2.py", line 26, in connect_db
    con = sqlite3.connect(path)
sqlite3.OperationalError: unable to open database file