Frequently Asked Questions All Subject Category Best Practices (11) Contour Buffer Strips (0) Database Prep (1) Depressions (0) Documentation (1) Enhancement (0) Flow Direction: Bug (0) Install issue (0) Python (0) Setup (0) TauDEM (1) Unresolved (0) Search Frequently asked questions by keywordsSearch frequently asked questionsSearch QuestionsFind frequently asked questions by subjectBest Practices 11Database Prep 1Documentation 1TauDEM 1Question: When running the Drainage Water Management Tool, I keep getting an error – “int() argument must be a string or a number, not ‘NoneType’”. Has anyone else experienced this error? How did you address it?