main.py

from flask import request
from diffusers import StableDiffusionPipeline
import torch
from fastapi import FastAPI, Response  
from fastapi.middleware.cors import CORSMiddleware

app = FastAPI()

app.add_middleware(  # add the middleware
    CORSMiddleware,
    allow_credentials=True,  # allow credentials
    allow_origins=["*"],  # allow all origins
    allow_methods=["*"],  # allow all methods
    allow_headers=["*"],  # allow all headers
)


model_id = "runwayml/stable-diffusion-v1-5"
pipe = StableDiffusionPipeline.from_pretrained(model_id, torch_dtype=torch.float16)
pipe = pipe.to("cpu")

def dummy(images, **kwargs):
    return images, False

pipe.safety_checker = dummy

@app.route('/')
def generate_image():
    prompt = request.args.get('prompt')
    image = pipe(prompt).images[0]
    # do something with the generated image
    image_data = image.tobytes().hex()

    return {'image_data': image_data}