We ran into this issue on the latest version of Data Widgets. We originally did not pass a ChunkSize to Export_To_Excel and left it empty. This seems to throw this error now and it requires an integer. This is the number of rows it processes at a time, you will sometimes notice a progress bar when exporting a large amount of rows. I seem to get the fastest exports using 500 for this number in my testing.
You can also downgrade to Data Widgets v2.20.1, which still allows the empty value on ChunkSize.
Hi, Example of the parameters, important a number in "Chunk size"