What library? I can show you the code. I also don't know where to get some of the libraries so any help on that would help. Thanks!!
the most obvious reason of this error is that the library is either corrupted, or wrongly included in your directory.
For adding libraries, the "Install from .zip" option on the Arduino IDE is not very reliable.
Make sure the folder do not have another sub-folder in it, and then the source files.
The library folder should be YOUR_NAMED_FOLDER->src/examples folders-> .c and .h files .
Then put the YOUR_NAMED_FOLDER with all files in it in C:\Program Files (x86)\Arduino\libraries if your Arduino IDE is installed on the C drive (windows) or the parent folder accordingly.