Is there a limitation in UART receive buffer size in esplink firmware?

[CRSREE]

I am using esp-link firmware for my project. I am able to get all the transactions in the esp-link microcontroller console. I am using MQTT for publishing the received transactions from the controller by esp-link firmware to the cloud. But while publishing the transactions ,some transactions are missing, but it is available in the micro controller console.

How can I solve this issue? Is there any limitation in the esp-link firmware regarding this?

Thank you,
CRSREE