@musicman I'm sure there are more efficient ways to read logs, but I often use either
A: "grep errorname /path/to/logfile | less"

when I know what I'm looking for

or

B: "tail -n someLargeNumber /path/to/logfile | less"
(or sometimes "tail -n someLargeNumber /path/to/logfile | head -n someSmallerNumber | less")

when I'm just wanting to see the most recent someLargeNumber entries or some earlier subset of the most recent someLargeNumber entries.

But most of the time, there will be at least one script tag that is loading # The src attribute will give a path where that is coming from.