If the project structure follows the one below, running pod install is successful:

└── guideProgram
├── package.json
├── node_modules
└── ios
└── Podfile

However, when the structure is customized as follows:
└── myProgram
├── rn
├── ├── node_modules
├── └── package.json
└─ ios
└── Podfile

It results in an error message:
“[!] Invalid Podfile file: undefined method `prepare_react_native_project!’ for #Pod::Podfile:0x00007f8733259588.”

It has been bothering me for several days now！Any help will be appreaciated