I enrolled in the first version of the course and was able to navigate to the folders and psets without much issue. I let someone edit folders and settings in my virtual machine and now I think I've lost access to necessary directories for accessing source code.
Whenever I attempt to run the command
cp -r ~cs50..etc (listed on this page), I get the error:
cannot stat '/home/cs50/pub/lectures..': No such file or directory
How do I fix this problem?