LTC2992 Current Measurement Problem

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Joined Jun 17, 2022
I have LTC2992 schematics that I have created completely suitable for the datasheet. I am reading current and voltage on 8 different channels using 4 different LTC2992, but I can't read any current in only one of the lines. However, when I draw current in a controlled manner from this line that I cannot read, I see a proportional current change in a different channel of a different ltc2992 IC. Could this problem be caused by noise? What should I check?, thanks. I am feeding the circuit with 3.3V from VDD input.

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