Changed error message to warning messages.

app.py

@@ -185,4 +185,4 @@ with gr.Blocks(css="#htext span {white-space: pre-line}") as demo:
         )
 
 
-demo.launch(share=False)
+demo.queue().launch(share=False)

controlled_summarization.py

@@ -108,7 +108,8 @@ def ctrlsum_for_str(input, length=None, keywords=None) -> List[Tuple[str, str]]:
 def ctrlsum_for_file(input=None, length=None, keywords="", text="", url="") -> List[Tuple[str, str, str]]:
     if input == None and url == "":
         if text == "":
-            raise gr.Error("Input cannot be left blank!")
+            gr.Warning("Input cannot be left blank!")
+            return None, None, None
         else:
             return ctrlsum_for_str(text, length, keywords), text, None
     else:
@@ -133,7 +134,8 @@ def ctrlsum_for_file(input=None, length=None, keywords="", text="", url="") -> L
 
                 filename = download_pdf(url, './cache/')
             else:
-                raise gr.Error("Invalid URL (Not PDF)!")
+                gr.Warning("Invalid URL (Not PDF)!")
+                return None, None, None
         else:
             filename = input.name
         if keywords != "":
@@ -151,13 +153,15 @@ def ctrlsum_for_file(input=None, length=None, keywords="", text="", url="") -> L
             results = ctrlsum_pipeline.predict(filename,
                                                save_results=False, length=length, keywords=keywords, num_beams=1)
         else:
-            raise gr.Error("File Format Error! Please upload .txt or .pdf files.")
+            gr.Warning("File Format Error! Please upload .txt or .pdf files.")
+            return None, None, None
 
         output = []
         for res in results["summary"]:
             output.append(f"{res}\n\n")
         if results["raw_text"] == "":
-            raise gr.Error("Unable to parse File! Please try a different file.")
+            gr.Warning("Unable to parse File! Please try a different file.")
+            return None, None, None
         return "".join(output), results["raw_text"], filename