Update app.py

app.py

@@ -49,12 +49,14 @@ class get_datasets:
         dataset = []
         if file is None:
             return "File not found. Please upload the file again."
-        with open(file,'r') as file:
-            for line in file:
-                dataset.append(json.loads(line.strip()))
-        print(dataset[0]['query'])
-        return dataset
-
+        try:
+            with open(file,'r') as file:
+                for line in file:
+                    dataset.append(json.loads(line.strip()))
+            print(dataset[0]['query'])
+            return dataset
+        except FileNotFoundError:
+            return "File not found. Please upload the file again."