Extra data are received incomplete

I have an issue with extra data. I want to send a specific data with an exception and when I’m sending a JSON object with it, the data are received incomplete. I sniffed the network with Wireshark and fetch the specific packet and find out that the data is totally true and nothing is missed but in Sentry I didn’t get the whole of data.
I posted the issue here but no one answers me anymore.
please help me to pass through the issue.