I’m trying to convert a .png file to .zpl using a public API and following this documentation (https://labelary.com/service.html) – point 6.1.

When I try it in Postman, it works very well.
Prints (PostMan)
https://prnt.sc/yBh7oJvy6YNG
https://prnt.sc/dR5F_q3J4qFV

I’m currently attempting the same process in Power Automate, but I’m encountering an error: ‘ERROR: Unknown image format’.

Could someone help me troubleshoot? Here’s my Power Automate setup:
https://prnt.sc/gOdzv8UAP3Pk

123.png is my image file, and varContent contains the content of 123.png in base64 format.
I’m doing something wrong?