If scheduling fails with the error message:
Error in '_tam_isDataFrame(.)': It is not a data frame.
,
this issue is likely caused by changes in the source data.
Solution:
- Verify the data source. Ensure that the target data source (e.g., a database table, file, etc.) exists and is returning the correct data.
- After fixing any issues with the data source, rerun the schedule to confirm that it works as expected.