bug

app.py

@@ -165,7 +165,7 @@ def infer(
     prompt_dict = {"prompt_1": prompt1, "prompt_2": prompt2}
     for key, value in prompt_dict.items():
         assert value is not None, f"{key} must not be None."
-    if operation_mode != 'Interpolation':
+    if operation_mode == 'Interpolation':
         assert num_of_interpolation >= 5, "For linear interpolation, please sample at least five images."
     else:
         assert num_of_interpolation == 3, "For arithmetic, please sample three images."