update

app.py

@@ -796,6 +796,10 @@ with gr.Blocks(delete_cache=(3600, 3600)) as demo:
 			gr.Warning("Please upload a file and enter the sampling rate.")
 			stage2_info["errorFlag"] = True
 			return {stage2_json : stage2_info}
+		elif samplerate.isdigit() == False:
+			gr.Warning("The sampling rate needs to be an integer.")
+			stage2_info["errorFlag"] = True
+			return {stage2_json : stage2_info}
 		
 		# delete the previous folder of Stage2
 		if "filePath" in stage2_info and stage2_info.get("state")=="finished":
@@ -848,7 +852,7 @@ with gr.Blocks(delete_cache=(3600, 3600)) as demo:
 										old_idx = stage1_info["mappingResult"][i]["index"],
 										orig_flags = stage1_info["mappingResult"][i]["isOriginalData"])
 				except FileNotFoundError:
-					print('stop!!')
+					#print('stop!!')
 					break_flag = True
 					break