You did not enable ‘debug logging’. So the logs don’t contain many useful data, except
there are a lot of these
Aug 07, 2018 21:04:55.391 [0x70000b0c8000] WARN - SLOW QUERY: It took 350.000000 ms to retrieve 1 items.
Which indicates that either there is an issue with an aging/failing hard drive
or the computer is under heavy load or is simply too old or its RAM is too small.
Did you recently add a lot of photos into Plex?
How much free space is left on your system drive? (or wherever /Users/plex/Library/ is residing)
