src/main.py:10: error: Incompatible return value type (got "str", expected "int")  [return-value]
src/main.py:25: error: "None" has no attribute "strip"  [union-attr]
src/utils.py:3: error: Cannot find implementation or library stub for module named "nonexistent"  [import]
Found 3 errors in 2 files (checked 5 source files)
