added backup contingency

TTS/engine_wrapper.py

@@ -114,9 +114,12 @@ class TTSEngine:
         #     self.length += MP3(f"{self.path}/{filename}.mp3").info.length
         # except (MutagenError, HeaderNotFoundError):
         #     self.length += sox.file_info.duration(f"{self.path}/{filename}.mp3")
-        clip = AudioFileClip(f"{self.path}/{filename}.mp3")
-        self.length += clip.duration
-        clip.close()
+        try:
+            clip = AudioFileClip(f"{self.path}/{filename}.mp3")
+            self.length += clip.duration
+            clip.close()
+        except:
+            self.length = 0
 
 
 def process_text(text: str):