Update image_generator.py

image_generator.py

@@ -27,7 +27,7 @@ def set_scheduler(pipe, scheduler_type):
         pipe.scheduler = DPMSolverMultistepScheduler(use_karras_sigmas="yes")
     return pipe
 
-def generate_image(prompt, num_inference_steps, seed, guidance_scale, negative_prompt=None, pipe_id="KBlueLeaf/kohaku-xl-beta7.1", unet_model_id="latent-consistency/lcm-sdxl", scheduler_type="LCM"):
+def generate_image(prompt, num_inference_steps, seed, guidance_scale, negative_prompt, pipe_id="KBlueLeaf/kohaku-xl-beta7.1", unet_model_id="latent-consistency/lcm-sdxl", scheduler_type="LCM"):
     global loaded_pipe
     pipe = load_model(pipe_id, unet_model_id)
     pipe = set_scheduler(pipe, scheduler_type)