I have downgraded to v12.13 as mentioned in the above thread but I am still facing the issue. I have attached a picture of my flow for reference. I am using 4 solos which are connected to the same rs485.
I think there was no need to downgrade to Node js v12 since the issue described it that older thread has now been fixed in the newer versions of the Modbus nodes (see Github)
.. and i believe that issue was only affecting Modbus TCP connections and not Serial.
Its impossible from a screenshot to understand what could be the problem
Can you share your Flow and tell us some details about the devices ?