Error: Invalid Chunk Preamble #packet

Recently, while trying to receive a message, the connection has failed with the message "Error: Invalid chunk preamble" (see attached screenshots). I can't find any information on this error. What does this mean?

I have always been able to download the same message using PAT afterward without issue. Also, it doesn't seem to happen every time, just with some messages.

I am using RadioMail 1.1.1 on iOS 16.2 connected via TCP to a Raspberry Pi 4 running ser2net with a USB connected Mobilinkd Nucleo TNC.

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