add chunk size function

app.py

@@ -173,6 +173,9 @@ def basic_translate(source_sentence, src_language, tgt_language):
     return translations 
 
 def summary_translate(src_text, temp_tgt_text, tgt_language, session_id):
+    if len(temp_tgt_text.strip()) == 0:
+        return "", 0
+    
     system_prompts = ["You are a helpful rephraser. You only output the rephrased result."]
     translations = []
     for prompt_style in system_prompts: