Issue with Dolphin Protocol (Protocol message contained an invalid tag)

Dears,
I have issue with device that using the Dolphin protocol
the deivce already was configured and was using in other gps tracking platform so the device was config on port 6219
now I try to use it on Traccar Plateform.

I change the default Dolphin (5219) to (6219) but I got error in traccar log
This is the change line in traccar.xml

 <entry key='dolphin.port'>6219</entry>

Any help

here is the log file

2024-01-29 15:30:15  INFO: [T84597269] connected
2024-01-29 15:30:17  INFO: [T84597269: dolphin < 45.153.117.8] 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
2024-01-29 15:30:18  INFO: [T84597269: dolphin < 45.153.117.8] 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
2024-01-29 15:30:18  INFO: [T84597269] error - Protocol message contained an invalid tag (zero). - InvalidProtocolBufferException (... < DolphinMessages:4463 < *:5178 < *:5170 < ... < *:5658 < *:5960 < *:5952 < ... < *:5403 < DolphinProtocolDecoder:63 < ExtendedObjectDecoder:75 < ...)
2024-01-29 15:30:18  INFO: [T84597269] disconnected
2024-01-29 15:30:20  INFO: [T32fef727] connected
2024-01-29 15:30:23  INFO: [T32fef727: dolphin < 45.153.117.8] 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

Looks like some incompatibility issue.

any advice ?

it was work on gpswox wich is already build on traccar as backend

It should work the same way as on GPSWOX. I'm not aware of any significant changes between the two implementations for this protocol specifically.

is there any thing should i check it ?

Check GPSWOX logs and test working samples from there with the official Traccar. If there are any differences, let us know and provide the logs.

Actually i dont have access to GPSWOX server source just the webinterface so i cant check the log

Then I'm not sure how to debug it. Maybe you can ask them for a log fragment from the device.