What does this mean?

[Jim]

Whenever I boot the computer into Kubuntu 18, it takes a couple of 
minutes to boot.  For a while the screen is blank.  Finally I'm able to 
see what it's doing as it boots, and I find this.


a start job is running for 
dev-disk-by\x2uuid-377be6ee\x2dc467\x2d44fc\x2de7dad05366fd.device

Then in parenthesis there is a timer like this (1min 9s / 1min 30s) The 
number before the slash counts up to 1min 30s then the system continues 
booting like it should.

Any idea what this is or how to fix it?

thanks