fix action error

Author: statmlben

pyproject.toml

@@ -38,6 +38,7 @@ test = ["pytest >= 7.0", "pandas >= 1.5.0", "pytest-cov"]
 
 [tool.pytest.ini_options]
 testpaths = ["tests"]
+pythonpath = ["."]
 python_files = ["test_*.py"]
 python_classes = ["Test*"]
 python_functions = ["test_*"]