Change summ desc. Add error msg.

controlled_summarization.py

@@ -80,6 +80,8 @@ def ctrlsum_for_file(input=None, length=None, keywords="", text="", url="") -> L
         output = []
         for res in results["summary"]:
             output.append(f"{res}\n\n")
+        if results["raw_text"] == "":
+            return "Unable to parse File !", None, filename # if file parsing does not have any output string
         return "".join(output), results["raw_text"], filename
 
 

description.py

@@ -44,8 +44,6 @@ To **test on strings**, simply input a string.
 '''
 
 ctrlsum_file_md = '''
-This is the demo for **CocoSciSum**.
-
 ## Controlled Summarization uses FLAN-T5 to generate user-customised summaries from your input file or URL link.
 
 To **test on a file**, the input can be: