Validation Log 2024-05-26 05:42:13.183577 mwtab Python Library Version: 1.2.5 Source: https://www.metabolomicsworkbench.org/rest/study/analysis_id/AN004109/mwtab/txt Study ID: ST002500 Analysis ID: AN004109 File format: txt Status: Contains Validation Errors Number Errors: 1 Error Log: SUBJECT: Contains item "GENDER" with null value.