Real machine running error

[CFPanda]

Hello, I am running normally on the simulator, but the following error is reported when running on the real machine:
Possible Unhandled Promise Rejection (id: 16):
Component Stack
< />
172.20.10.3:8081/index.bundle?
platform=ios&dev=true &minify=false&modulesOnly=fals e&runModule=true&app=com.chuanf:20109
< callTimer />
172.20.10.3:8081/index.bundle?
platform=jos&dev =true&minify=false&modulesOnly=fals e&runModule=true&app=com.chuanf: 24067
«callTimers
/>
172.20.10.3:8081/index bundle?
platform=ios&dev=true&minify=false&modulesOnly=fals e&runModule=true&app=com.chuanf: 24233