Problem in running LTSpice

I cannot run my diagram...it kept popping out (Could not open library file "DigitalLogic.lib" )
What is the error an how to solve it.
Some components gone missing and I download n save it in lib..I suspect thats the problem
How to solve it?? anyone...

What version of LTspice are you using.

where exactly is the library file "DigitalLogic.lib" located?

SPICE is looking for "DigitalLogic.lib". It is likely not on your computer.