ORB_SLAM2 without libORB_SLAM2.so

When I ran ORB_SLAM2 this morning, I got an error message: couldn't open libORB_SLAM2 .so No such file .... (forgot it specifically)

I didn't find libORB_SLAM2.so under /usr/lib (I don't know what happened)

Then go to the lib folder under the ORB_SLAM2 folder to find the libORB_SLAM2.so file and copy it to /usr/lib

Command: sudo libORB_SLAM2.so file location /usr/lib

solve