ios – react native simulator can not connect server on MAC

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Could not connect to development server.

Ensure the following:

  • Node server is running and available on the same network – run ‘npm start’ from react-native root
  • Node server URL is correctly set in AppDelegate
  • WiFi is enabled and connected to the same network as the Node Server

URL:
http://localhost:8081/index.bundle?platform=ios&dev=true&minify=false

RCTFatal
__28-[RCTCxxBridge handleError:]_block_invoke
_dispatch_call_block_and_release
_dispatch_client_callout
_dispatch_main_queue_callback_4CF
CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE
__CFRunLoopRun CFRunLoopRunSpecific GSEventRunModal
-[UIApplication _run] UIApplicationMain main start_sim 0x0

this error show in device simulator
Normally it work ,but today problem appear By without change my react native code

I npm start at react native root folder. Metro bundler is stuck at 99.4% when call from device simulator

My react-native. version is 0.61.2

I try solve it by many solution from google , but it not work yet.
please. suggest me

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