[jsinterp] Fix for youtube player 1f7d5369

Closes #4635 again

yt_dlp/extractor/youtube.py

@@ -2652,9 +2652,14 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
 
         if self.get_param('youtube_print_sig_code'):
             self.to_screen(f'Extracted nsig function from {player_id}:\n{func_code[1]}\n')
-
         func = jsi.extract_function_from_code(*func_code)
-        return lambda s: func([s])
+
+        def inner(s):
+            ret = func([s])
+            if ret.startswith('enhanced_except_'):
+                raise ExtractorError('Signature function returned an exception')
+            return ret
+        return inner
 
     def _extract_signature_timestamp(self, video_id, player_url, ytcfg=None, fatal=False):
         """