BCE protocol exception (IndexOutOfBoundsException)

i have device using BCE protocol, but on every data device sent getting this error on server logs.

2020-04-12 22:16:27  WARN: [d018922b] error - readerIndex: 681, writerIndex: 497 (expected: 0 <= readerIndex <= writerIndex <= capacity(497)) - IndexOutOfBoundsException (... < BceProtocolDecoder:305 < ExtendedObjectDecoder:51 < ... < WrapperContext:102 < ...)

HEX data

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

can you specify is there any issue with device configuration or its and server bug
THANKS

What makes you think it's BCE protocol?

sorry i have no idea, that's why i'm seeking help/guideline from you.
your thoughts and comments will help me a lot to figure out this issue and may be to solve this as well.
any suggestions/comment please
thanks

2020-04-07 14:31:23  INFO: [a3aab7a8: bce < 94.57.216.88] HEX: 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
2020-04-07 14:31:23  WARN: [a3aab7a8] error - readerIndex: 681, writerIndex: 497 (expected: 0 <= readerIndex <= writerIndex <= capacity(497)) - IndexOutOfBoundsException (... < BceProtocolDecoder:310 < ExtendedObjectDecoder:51 < ... < WrapperContext:102 < ...)
2020-04-07 14:31:23  INFO: [a3aab7a8] disconnected

I hope this will help.
Device Model: BCE FMS500 ONE

Either it's not BCE protocol or maybe it's changed or maybe it's not fully supported. Without documentation and further investigation it's not possible to tell.