Error Assertion failled

[dansolo333]

Error: Assertion failed
▶ 4 stack frames were collapsed.
claimNFTs
C:/Users/Jessica/Downloads/hashlips_nft_minting_dapp-main/src/App.js:125
122 | });
123 |
124 | const claimNFTs = () => {

125 | let cost = new BN(CONFIG.WEI_COST, 10);
| ^ 126 | let gasLimit = new BN(CONFIG.GAS_LIMIT,);
127 | let bNMintAmount = new BN(mintAmount);
128 | let totalCostWei = cost.mul(bNMintAmount).toString(10);
View compiled
onClick
C:/Users/Jessica/Downloads/hashlips_nft_minting_dapp-main/src/App.js:361
358 | disabled={claimingNft ? 1 : 0}
359 | onClick={(e) => {
360 | e.preventDefault();
361 | claimNFTs();
| ^ 362 | getData();
363 | }}
364 | >
View compiled
▶ 19 stack frames were collapsed.

[dansolo333]

please i need help on this