@Seyfi – a key thing to learn here is that it is important to share exactly what your input data is so that others can help you test and debug a data problem. Not data loaded in an app. Not a screenshot. Not an HTML view or markdown formatted view. Just the actual data. That is what the program needs, and what causes errors, so that is what you should share.
If you have reason that you need to use tabs instead of commas, loadTable has a tsv mode. However using commas is often simpler.
When you say “I modified my csv, but now”… again, we can’t possibly inspect or test, because again you haven’t shared your actual data (or at least a sample of it).