The QUERY is giving double results on a single cell

I recently started to use QUERYs on Google Sheets. I just encountered a problem where after typing my query

=QUERY('Copy of TEST'!A1:E7,"select A, sum(D) group by A")

it is compounding the A1 row with the Title of my columns (in this case is "Service Type Updates"), and the row A2 that belongs to the first service ("Consultation").

Service Type Updates Consultations sum Tier 1 1

I have tried everything adding an extra row between those to rows but nothing.

Thank You, whoever can help me.