Update app.py

app.py

@@ -4,7 +4,7 @@ from PIL import Image
 from pydantic import BaseModel
 from lama_cleaner.server import process
 from lama_cleaner.server import main#先初始化才能用process
-from fastapi import FastApi
+from fastapi import FastAPI
 #urllib3 1.26.4  兼容
 class FakeArgs(BaseModel):
     host: str = "0.0.0.0"