fix: Fixed directory not existing when uploading files

Author: amisadmin

fastapi_amis_admin/admin/site.py

@@ -112,6 +112,7 @@ def register_router(self):
         async def file_upload(file: UploadFile = File(...)):
             filename = self.get_filename(file)
             file_path = Path(self.file_directory) / filename
+            os.makedirs(file_path.parent, exist_ok=True)
             try:
                 res = await file.read()
                 if self.file_max_size and len(res) > self.file_max_size: