It looks like TabPy has not recognized your custom value for the "TABPY_EVALUATE_TIMEOUT" parameter. Would you be willing to share your config file and the command you're using to start up TabPy?
I figured out the solution. Tabpy by looks for the default configuration file only in the following folder:
If the config file is in any other location, then tabpy needs to be pointed to that path by using the following command to start tabpy: