Sumifs not working when referencing another sheet

Can someone tell me what I'm doing wrong? This formula doesn't want to work when I'm referencing another sheet.

=SUMIFS({VI FTE Needs}, {VI Start Date}, >=DATE(2023, 1, 1), {VI End Date}, <=DATE(2023, 1, 31), {VI Project Status}, <>"Closed")

Thank you in advance!

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