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Metamask: Uncaught (in promise) Error: Internal JSON-RPC error. { “code”: -32000, “message”: “Execution reverted”, “data”: “0x” }

Published by Terlumun Aondover on February 10th, 2025.

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Metamk Error: Not captured (in promise) Error: internal error in JSON-RPC

Do you have errors when interacting with a decentralized application (DAPP) built in the Ethereum block chain using Metamask? In particular, it meets an internal error message of JSON-RPC. In this article, we will destroy what is happening and provide steps to solve problems and solve the problem.

What is the JSON-RPC error?

JSON-RPC is a protocol used to interact with decentralized applications (DAPP) in Ethereum Blockchain. It allows developers to send data to intelligent contracts or interact with them programmingly using Javascript libraries such as Metamask.

Metamk Error: Not captured (in promise) Error: internal error in JSON-RPC

When trying to call a function of a contract implemented, Metamk launches an “internal error in JSON-RPC”. This error generally occurs when:

The contract code does not support JSON-RPC.

There is a problem with the transaction or signature data.

The contract has been made or suspended.

Uncreated error message (with promise)

The error message that provided shows that there is a problem with the performance of the function called by the contract deployed. Specifically:

Code: -32000

Message ':" The turned performance "

Data:" 0x "(which implies a transaction or result of the call)



 Steps to solve problems 


 Verify the contract code : Make sure your display contract is written in solidity and admits JSON-RPC. You can verify this using Remix Ide, Truffle Suite or other contract implementation tools.



 Verify the transaction data : Make sure all the necessary data (for example, "data") are included in the transaction or the call result. If there is a problem with a transaction firm or data structure, this can lead to JSON-RPC errors.



 Check if there are reversed : When called a function of a contract deployed, it can return for several reasons, such as non -valid code, insufficient means or gas limits. Make sure your contract has enough gas and the function does not have conditional statements that can lead to recovery.


 Additional tips

Use theConsole.log` method in Remix to verify transaction data and call score.

Try to call a different characteristic of the same contract to rule out specific problems.

If you are still experiencing problems, consider updating MetamSk or move on to a newer version with improved JSON-RPC support.

After these steps and problem solving techniques, you must be able to solve your problem with an “internal JSON-RPC error” when interacting with Ethereum Blockchain contracts deployed using MetamSk. Congratulations!

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