OK, I see the problem now. It's the file encoding of the library's library.properties metadata file. Currently, the Arduino IDE 2.x only supports UTF-8 file encoding, but the author of the TimerFive library has used a different encoding.
This is a known bug, which is tracked here:
If you want to continue using the library with Arduino IDE 2.x, you can open the library.properties file in a text editor and then save it in UTF-8 encoding. The file will be located under the sketchbook folder at libraries/TimerFive/library.properties.