I'm implementing basic OCR client on PHP and can't get processMRZ working, i receive empty recognition xml or just couple of lines filled with angle brackets (
<). I'm using guzzle and tried to pass file in several ways, including passing as a request body and as a parameter, but i'm just receiving more empty responses. Is there any precise documentation about how i should pass the file to API, which headers are required for correct file acceptance, are there any specific options i should know? I'm passing two quite clean passport scans, i'm sure the image is clean enough, i just think i'm doing something wrong.