getting openthread error OT_ERROR_INVALID_SOURCE_ADDRESS

[Sumit Jena]

I'm trying to run a coap_client example to send i2c data but getting this error code over console while running the build.

[Jørgen Holmefjord]

Hi,

You request is lacking a lot of information.

• Which SDK and SDK version are you using? 
• Which function is reporting OT_ERROR_INVALID_SOURCE_ADDRESS?
• What modifications have you made to the coap_client example? Do you see the same error without your own additions?

Best regards,
Jørgen

[Sumit Jena]

im using nrf connect sdk version 2.1.0,

the function is the handler for sending the message.

yep even after removing the modifications it gives me the error.