fix: double response processing

frappe/app.py

@@ -103,7 +103,8 @@ def application(request: Request):
 			deprecation_warning(
 				f"{frappe.form_dict.cmd}: Sending `cmd` for RPC calls is deprecated, call REST API instead `/api/method/cmd`"
 			)
-			response = frappe.handler.handle()
+			frappe.handler.handle()
+			response = frappe.utils.response.build_response("json")
 
 		elif request.path.startswith("/api/"):
 			response = frappe.api.handle(request)

frappe/handler.py

@@ -57,8 +57,6 @@ def handle():
 		# add the response to `message` label
 		frappe.response["message"] = data
 
-	return build_response("json")
-
 
 def execute_cmd(cmd, from_async=False):
 	"""execute a request as python module"""