fixed type error in print

app.py

@@ -9,7 +9,7 @@ def annotate_file(file_objects, model_type):
     generated_charfiles = []
     str1 = "Starting processing of files." 
     # pad1 = math.floor((os.get_terminal_size().columns - len(str1)) / 2) * "="
-    pad1 = 30
+    pad1 = "30"
     print(pad1 + "Starting processing of files." + pad1)
     for i, file_obj in enumerate(file_objects):
         target_filepath = f"/tmp/characteristicpoints_{i}.csv"
@@ -17,7 +17,7 @@ def annotate_file(file_objects, model_type):
         dijkprofile_annotator.annotate(file_obj.name, target_filepath, device='cpu')
         generated_charfiles.append(target_filepath)
         print(f"    finished processing: {file_obj.name}! saved to : {target_filepath}")
-        print("    ", "-" * (pad1 - 5))
+        print("    ", "-" * (int(pad1) - 5))
 		
 
     print("finished with all processing!")