my matlab is 2020a
show me errors:
MATLAB System block 'ddd/ Iterator 1/Serial Receive' error occurred when invoking 'getSampleTime' method of 'codertarget.arduinobase.internal.arduino_SerialRead'. The error was thrown from '
'C:\Program Files\Polyspace\R2020a\toolbox\matlab\system\+matlab\+system\SampleTimeSpecification.p' at line 0
The value of 'SampleTime' is invalid. Expected input to be positive
Does anyone know what I should do?