[SOLVED] High Gas Fee's on Rinkeby using React Moralis

Moralis General
#1

Hello everyone!

I have created a simple dapp that mints an NFT for 0.01 ETH. Everything runs fine however while testing on both local and rinkeby networks, I am getting a high gas fee estimate when attempting to mint an NFT. The contract I have deployed to rinkeby is 0xc9cB8bD6bBCe97db0402A96CB54E81456DD641e8 .

The code interacting with the contract is below.

const { runContractFunction: mintNft, isFetching } = useWeb3Contract({
    abi: nftAbi,
    contractAddress: nftContractAddress,
    functionName: "mintNft",
    msgValue: value,
  });

I can mint from the contract with expected fee’s paying about 0.01021973 RinkebyETH for transaction and mint instantly.

However, when I click mint from my application I get this high gas fee estimate.

image
image484×576 19.3 KB

And if I do proceed, rinkeby still takes a while to pick up my transaction.

Have I implemented useWeb3Contract correctly? or is there an issue with my contract.

Just trying to figure out what may be causing this issue, as I would like to deploy to mainnet and not have users pay unncesssary gas. Thank you!

#2

You could see how that gas fee estimate is computed. Based on gas price and the gas used. After you make the transaction you will the the exact cost.

#3

Yes I have noticed that it does not actually take 0.05-0.08 eth only about 0.01 + some. However, seeing this while interacting with contract can be offsetting for users. Is there anyway to prevent this on my end?

#4

You could try with a different RPC url to see if it works differently.

How are you testing locally?

#5

I am connecting to the local hardhat node and using an account that I imported over to metamask to interact with the application.

image
image494×863 28.2 KB

#6

Can you see more details on how that estimation is done? It is the gas limit or gas price or both?

#7

Yes I can see a more detailed overview of transaction

image
image474×799 19.9 KB

#8

This is after the transaction is made. I mean at estimation time.

#9

Oh no I don’t believe so. I don’t see an option for more detailed view

#10

You can try to click on edit

#11

Thank you, This is what I see for a max fee of 0.0647 eth

image
image475×785 17.6 KB

Metamask insists on having a gas limit of 29021272 for transaction to proceed.

#12

Yes, somehow that gas limit is too big. If you use ethers directly you could set that gas limit.

#13

Ok I will switch to that and expriment with it. Setting it manually is working fine. Thank you for your fast responses!

1 Like