Error while trying to verify ERC721PresetMinterPauserAutoId

Support Contracts
1

I’m getting this error while trying to verify on code my ERC721PresetMinterPauserAutoId token with truffle-plugin-verify.

cannot ready property '97' of undefined


// migrations/2_deploy.js
// SPDX-License-Identifier: MIT
const ERC721PresetMinterPauserAutoId = artifacts.require("ERC721PresetMinterPauserAutoId");

module.exports = function(deployer) {
  deployer.deploy(ERC721PresetMinterPauserAutoId, "Seth Balance","SETH BALANCE", "https://seth-nft.herokuapp.com/");
};

this is how my truffle-config looks:

	testnet: {
      provider: () => new HDWalletProvider(mnemonic, `https://data-seed-prebsc-1-s1.binance.org:8545`),
      network_id: 97,
      confirmations: 10,
      timeoutBlocks: 200,
      skipDryRun: true
    },
    bsc: {
      provider: () => new HDWalletProvider(mnemonic, `https://bsc-dataseed1.binance.org`),
      network_id: 56,
      confirmations: 10,
      timeoutBlocks: 200,
      skipDryRun: true
    },
	
	  bscTestnet: {
      provider: () => new HDWalletProvider(mnemonic, 'https://speedy-nodes-nyc.moralis.io/612149607c11b2845c0e0559/bsc/testnet',),
      network_id: 97,       // Ropsten's id
      gas: 5500000,        // Ropsten has a lower block limit than mainnet
      confirmations: 10,    // # of confs to wait between deployments. (default: 0)
      timeoutBlocks: 500,  // # of blocks before a deployment times out  (minimum/default: 50)
      skipDryRun: true     // Skip dry run before migrations? (default: false for public nets )
    },
2 
truffle(testnet)> run verify ERC721PresetMinterPauserAutoId@0xefa55cd475be42f62e
21917dd208d4c341ff5d69 --debug
DEBUG logging is turned ON
Running truffle-plugin-verify v0.5.9
Verifying ERC721PresetMinterPauserAutoId@0xefa55cd475be42f62e21917dd208d4c341ff5
d69
Reading artifact file at C:\Users\Morang4\balance\build\contracts\ERC721PresetMi
nterPauserAutoId.json
Custom address 0xefa55cd475be42f62e21917dd208d4c341ff5d69 specified
Unexpected token u in JSON at position 0
Failed to verify 1 contract(s): ERC721PresetMinterPauserAutoId@0xefa55cd475be42f
62e21917dd208d4c341ff5d69

Here some more information.