at least one dimension needs to match the tape width (%i, %i) vs %i (111, 111, 70)

[tarwebrood]

I'm trying to print QR codes with brother_pt

I've created a QR code PNG file using the tool 'qrencode':
qrencode -o qr_label.png 'https://example.org'

This creates a PNG file with a size of 111x111 pixels.
When I try to print this .png on my Brother P-touch E550W, I get the following error:

python3 -m brother_pt print -f ./qr_label.png

Could not auto-rotate image, at least one dimension needs to match the tape width (%i, %i) vs %i (111, 111, 70)

My printer is recognized:
python3 -m brother_pt discover

      Vendor	Model		Serial
 ( 1) Brother	PT-E550W	<SERIALNR>

python3 -m brother_pt -p <SERIALNR> info

Brother PT-E550W (<SERIALNR>):
 + Media width: 12mm
 + Media type : LAMINATED_TAPE
 + Tape color : WHITE
 + Text color : BLACK

Is this a Python2 vs Python3 issue, or should I change the resolution of my PNG file to a specific size?

Thank you so much for all your time you have already put in this project, and for reading my question.