Polling too fast (e.g., every 100ms) can overwhelm a slave device. Try increasing the Scan Rate to 1000ms or higher to see if the error clears.

What are you polling? (e.g., PLC, power meter, temperature controller?) Share public link

is usually resolved by addressing timing, hardware, or configuration issues rather than a software bug. Here is a review of how this issue is typically fixed: Common Fixes for "Bytes Missing" Error Adjust Serial Port Settings: