Update tts.py

tts.py

@@ -1,11 +1,15 @@
 import torch
 from transformers import SpeechT5ForTextToSpeech, SpeechT5Processor
+import sentencepiece
 
 MODEL_ID = "microsoft/speecht5_tts"
 processor = SpeechT5Processor.from_pretrained(MODEL_ID)
 model = SpeechT5ForTextToSpeech.from_pretrained(MODEL_ID)
 
 def synthesize_speech(text):
+    if not text:
+        return "ERROR: Please provide text for synthesis"
+    
     inputs = processor(text, return_tensors="pt")
     device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
     model.to(device)