Now that I see your file (even though there is no code in it) I see I misunderstood what you are trying to do. You want to do something if a row is non-blank in column E, but skip if column E is empty or contains only spaces.
Norie has the right solution here. You don't have any code for me to modify so you can look at mine and adapt it. When I run this code on your data:
I get this result:
Row 2 Column E is blank: False
Row 3 Column E is blank: False
Row 4 Column E is blank: True
Row 5 Column E is blank: True
Row 6 Column E is blank: True
Row 7 Column E is blank: False
Row 8 Column E is blank: True
Row 9 Column E is blank: True
Row 10 Column E is blank: True
Row 11 Column E is blank: False
Row 12 Column E is blank: True
Row 13 Column E is blank: True
Row 14 Column E is blank: True
Row 15 Column E is blank: False
Row 16 Column E is blank: True
Row 17 Column E is blank: True
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