Ethereum: ERC721 safeTransferFrom reverts with no message
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I can provide an article explaining what may be caused by the problem with your ERC721 Safetransfer from the function they return without message.
Understanding ERC721 Functionality of safe transfer
The « Safetransferfrom » function is the key part of the ERC721 standard, which allows for a safe and transparent NFT transfer between bills. Here is a review of what this function does: here is a high level:
- Takes into account what the NFT (recipient) and the account that he wants to receive (buyer) has already sent.
- If both conditions are met, it transfers NFT from the sender’s address to the buyer’s address.
- The transfer takes place in a way that prevents manipulation of the data sent.
Problem: returns without a message
When you call « Safetransferfrom » without any errors or warnings, the intelligent time of performing the Ethereum contract will return with an error message. However, when there are no mistakes and still returns, it means that something went not so internally under the contract.
There are several possible reasons why « Safetransferfrom » can unexpectedly return:
* incorrect recipient’s address : If the recipient’s account does not have enough ether (ETH) to pay for the NFT, the contract will return. This can happen if someone tries to move NFT from the zero balance account.
* Insufficient storage space : The sender’s account may not have enough space for storing NFT data. This can happen if the contract is implemented in a low warehouse environment or if the sender has insufficient ETH.
* incorrect `from 'i to’ addresses : If the recipient’s address does not match what the intelligent contract expects, he will return. Make sure that both « from » and `to 'addresses are correct.
Examples of use and debugging steps
To better understand where it may not be wrong, I recommend creating a simple test case to recreate the problem:
Solidity
Import * as ETH with "@Ethersproject/Ethers";
Simpleerc721transfer contract {
// implements an ERC721 contract in the Ethereum network.
Function Implementation () public phrases (address) {
// Suppose you have an ERC721 contract implemented.
address Newaccount = 0x123456789012345678901234567890;
return newaccount;
}
Safetransferfrom function (address sender, address recipient) public {
requires (sender! = null && recipient! = null, "sender and recipient must be addresses.");
requires (eth_storage_size (newaddress)> = 110 * 18, "insufficient storage space.");
// assuming you have an ETH balance for the contract.
requires (msg.value> = newaddress.balanceof (newaccount), "too little ether.");
// implement the NFT contract with ABI and address.
}
Mintnft () public function {
// Minting A NFT should be done safely!
}
}
In this example, « implementation » is no-op (it simply returns the address of the implemented contract) because we do not really implement anything. You can replace it with your own implementation to the mint and moving NFTS.
Make up for the problem:
* Check the space for storing the contract : Make sure you have enough ETH to store the data.
* Check the recipient’s address : Check twice that « from » and `addresses » to the addresses correspond to what an intelligent contract expects.
* Check the error message
: Look at the reinstatement message to understand the exact cause of the problem.
Application
Building the NFT market can be difficult, but it is necessary to identify the basic cause when problems arise. Understanding the functionality of ERC721 Safe transfer and debug techniques, you will be better prepared to solve problems with common problems in the process of developing an intelligent contract.