Hey @Cybele_C, just want to echo @Nicholas_Bokulich's advice. As well, this is the same "suite" of problems you ran into previously:
Your most recent error is virtually identical to the error you provided in this other thread.
In this case, it looks like the file ManifestRun2.csv doesn't exist in the folder that your terminal is currently working in. As @Nicholas_Bokulich mentioned, you can change working directories, or specify absolute filepaths. I just want to point out that this is the same "type" of error as before - previously you ran into issues because you left off the end of the file's name, while this time, you are running into a problem because you are missing the leading part of the file's name (in this case, the path to the file). To paraphrase @ebolyen - computers are very naive, you have to be exceptionally explicit when telling them what to do, in this case, you need to take care to provide precise filenames.
Thanks for being patient here, I know these kind of general computing errors can be frustrating, but we will get through it together! 
