Error: Failed to get recent blocking to Solana using an anchor test
Error message “TypeError: Fetch failed in an anchor test” indicates that the anchor testing library is unable to get a recent block hash from Solana’s network. This problem can occur for a variety of reasons, including changes in the RPC (remote procedure call) interface or compatibility problems with the Fetch method.
In this article, we will study possible solutions to solve the error and successfully get a recent block hashes on Solana using an anchor.
What is a block hash?
Block hash is a unique block block digital fingerprint in the blockchain. It denotes a special transaction and is used to track the history of transactions in the network.
RPC interface changes: potential reason
Method “Fetch” has occurred in recent RPC interfaces that can affect how to access the hashs block. Anchor uses different APIs than some other testing libraries such as Web3.py or Solana-API. You can try the following to solve this problem:
* Update the anchor to the latest version : Make sure your anchor installation is updated with the latest version.
Check the RPC Interface Documentation : Refer to the [Anchor API Documentation] ( to ensure you understand how to access block hashes using Method “Fetch”.
Compatibility questions: Potential Reason
Another possible cause of this error is the problem of compatibility between your testing library and anchor. The method of “fetch” may not work as expected due to differences in implementation or API use.
* Try an alternative RPC interface
: If you have problems with the Fetch method, try using another RPC interface that is compatible with the anchor version used.
* Check the Test Library Documentation : See the Documentation of the Desired Testing Library (such as Web3.Py or Solana-API) to see if there are some compatibility problems.
Code Example
You can use the following code passage to get a recent block hash:
`JavaScript
Import anchor from “anchor”;
Const Connection = wait for anchor.connect ();
Console.log (Connection.getlatestBlockhash ());
`
Note that it requires an anchor library and is updated to work with Solana’s latest RPC interface.
Conclusion
Error “TypeError: FETCH failed in an anchor test” can be resolved by updating the anchor to the latest version by checking the RPC interface documentation or trying to alternative RPC interfaces. You may need to deal with compatibility problems between your testing library and anchor.
When performing these activities and experimenting with various approaches, you should be able to successfully get a recent block hashes on Solana using anchor.