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Hello, Helix, and welcome to the forum:

What's the value of $1? Is there a glob wildcard in it? Is it empty?

The issue almost certainly lies with the end of the while loop, "done < $1". Try...

If I were you I'd first remove/comment lines 13-25 from your last posting and see if that alone would work.
Then I'd uncomment line 13-16 and see if it still works, then 17-18, and so on...

Btw....