if some directory/folder does not exist but somehow you navigated to that directory in that case you can see this Error,
for example:
- currently, you are in "mno" directory (path = abc/def/ghi/jkl/mno
- run "sudo su" and delete mno
- goto the "ghi" directory and delete "jkl" directory
- now you are in "ghi" directory (path abc/def/ghi)
- run "exit"
- after running the "exit", you will get that Error
- now you will be in "mno"(path = abc/def/ghi/jkl/mno) folder. that does not exist.
so, Generally this Error will show when Directory doesn't exist.
to fix this, simply run "cd;" or you can move to any other directory which exists.