My powerful friend Arduino ESP32

Today my friend Arduino show my his might power of sending POST request to server. Arduino ESP32 and his disciple RFID-RC522 give me beautiful uid of my cart!! Just look below what server mouth logs are saying to me.
I see Index -1715628757 everywhere. now is just a matter of checking why Id is negative hmm.... mysterious puzzle that will have to be solver very very soon. Possible it is related to translating unasigne log number to char and to String after. I am sure mighty Arduino will have some solution to that problem!

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