add error handling for pyttsx3 file writing

main.py

@@ -85,8 +85,9 @@ def generate_settings_markup(chat_id: str) -> InlineKeyboardMarkup:
 async def text_to_voice(text: str) -> BytesIO:
     with tempfile.NamedTemporaryFile(mode='wb', suffix='.ogg', delete=False) as ogg_file:
         temp_filename = ogg_file.name
-
         voice_done = False
+        
+        # If Google TTS is enabled, try to use it first
         if ENABLE_GOOGLE_TTS:
             try:
                 tts = gTTS(text)
@@ -95,6 +96,7 @@ async def text_to_voice(text: str) -> BytesIO:
             except Exception as e:
                 print("Google TTS failed, falling back to pyttsx3: --> ", e)
         
+        # If Google TTS is disabled or failed, use pyttsx3
         if not voice_done:
             engine = pyttsx3.init()
             engine.setProperty('rate', 140)
@@ -103,7 +105,18 @@ async def text_to_voice(text: str) -> BytesIO:
             await asyncio.sleep(0.5)  # Add a small delay before reading the file
 
     with open(temp_filename, "rb") as audio_file:
-        voice_data = BytesIO(audio_file.read())
+        try: # Try to read the file
+            voice_data = BytesIO(audio_file.read())
+        except Exception as e:
+            print(e)
+            # If reading the file fails, wait 0.6 seconds and try again
+            await asyncio.sleep(0.6)  # Add a small delay before reading the file
+            try:
+                voice_data = BytesIO(audio_file.read())
+            except Exception:
+                # If reading the file fails again, return None
+                os.remove(temp_filename)
+                return
 
     os.remove(temp_filename)
     voice_data.seek(0)