In order to check for issues related to positioning,I go to https://developer.apple.com/bug-reporting/profiles-and-logs/ and follow the instructions for Location Services for iOS to install a logging profile on my device.But I can't view the gpsd.log.lz4 file.
Unable to view the gpsd.log.lz4 file
lz4 is a compression algorithm and requires an app that can uncompress it to view the file.
You can find more info and pointers to a solution for you at https://lz4.org/