fix

Author: ono-max

launchable/test_runners/playwright.py

@@ -211,7 +211,7 @@ def _compute_test_prefix(self, report: Dict) -> str:
         if test_prefix == "." or test_prefix.startswith(".."):
             return ""
 
-        return test_prefix
+        return Path(test_prefix).as_posix()
 
     def _resolve_test_file(self, test_file: str, test_prefix: str) -> str:
         print("test_file: {}, test_prefix: {}, test_prefix: {}, test_prefix: {}".format(