Comment 1 for bug 1988521

I suspect the logs generated by fwts_test.py spit out "N/A", and it makes checking the time impossible:

https://github.com/canonical/checkbox/blob/main/checkbox-support/checkbox_support/scripts/fwts_test.py#L128-L130

I will need to run this on an actual device and capture the logs to see what's the content of the file before being processed.

We see this error more and more, so I think this is important to get fixed.