publicEncrypt TypeError: Cannot convert null value to object,

[eramudeep]

"react": "~18.0.0",
"react-native": "~0.70.6",

import crypto  from 'react-native-crypto';
import Buffer from 'buffer'

export function EncryptTheKeyWithRSA() { 
  const publicKey = "MIIBIjANBgkqhkiG9w0BAnhtgAmhKl3E"   
  const aesKey =   crypto.randomBytes(256).toString('hex')); 
  const { Buffer: { from } } = Buffer
  
  const encryptedAesKey = crypto.publicEncrypt(publicKey,   from(aesKey) );    
}

Getting TypeError: Cannot convert null value to an object,

Any help would be appreciated