Running in non-interactive mode.
Output file name was not provided, /results/orders/benchmark-550/stdout_parsed.txt will be used.
processed log items: 50k
processed log items: 100k
processed log items: 150k
processed log items: 200k
Log items processed. Formatting output...

Traceback (most recent call last):
  File "/lodestar/pyrock/shared/scripts/logs_parser.py", line 411, in <module>
    seconds = int(log_group_timestamp / 1000)
                  ~~~~~~~~~~~~~~~~~~~~^~~~~~
TypeError: unsupported operand type(s) for /: 'NoneType' and 'int'