Server error Code: -32000

Hi,
Trying to send BTC from multisig address. Getting this error since yesterday.
Help to understand the error,

Sorry, we got an error when trying to do the requested action: 'JSON-RPC Error:
Type: Server error
Code: -32000
Message: Non-hexadecimal digit found
’ (API method: create_send).
If this persists, please click on the question mark button on the top right-hand corner of the screen for support options.

you cant send btc to a multisig address from a counterparty wallet… its currently not supported