I get this error when i try calling the getBalance function in node.js

Question

eth_chainId
eth_accounts
eth_call
  WARNING: Calling an account which is not a contract
  From: 0xf39fd6e51aad88f6f4ce6ab8827279cfffb92266
  To:   0x5fbdb2315678afecb367f032d93f642f64180aa3

this is what logs on server.js:

Error: Error: could not decode result data (value="0x", info={ "method": "getBalance", "signature": "getBalance()" }, code=BAD_DATA, version=6.12.0)
    at makeError (C:\Users\Thato\OneDrive\Documents\Programming\DApps\DCrowdFunding\server\node_modules\ethers\lib.commonjs\utils\errors.js:129:21)
    at assert (C:\Users\Thato\OneDrive\Documents\Programming\DApps\DCrowdFunding\server\node_modules\ethers\lib.commonjs\utils\errors.js:149:15)
    at Interface.decodeFunctionResult (C:\Users\Thato\OneDrive\Documents\Programming\DApps\DCrowdFunding\server\node_modules\ethers\lib.commonjs\abi\interface.js:780:31)
    at staticCallResult (C:\Users\Thato\OneDrive\Documents\Programming\DApps\DCrowdFunding\server\node_modules\ethers\lib.commonjs\contract\contract.js:254:35)
    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
    at async staticCall (C:\Users\Thato\OneDrive\Documents\Programming\DApps\DCrowdFunding\server\node_modules\ethers\lib.commonjs\contract\contract.js:219:24)
    at async Proxy.getBalance (C:\Users\Thato\OneDrive\Documents\Programming\DApps\DCrowdFunding\server\node_modules\ethers\lib.commonjs\contract\contract.js:259:20)
    at async getContractBalance (C:\Users\Thato\OneDrive\Documents\Programming\DApps\DCrowdFunding\server\server.js:23:25) {    
  code: 'BAD_DATA',
  value: '0x',
  info: { method: 'getBalance', signature: 'getBalance()' },
  shortMessage: 'could not decode result data'

...this is my code:

async function getContractBalance() {
    try {
       // const result = await contract.getBalance();
        //console.log("Contract Balance:", result);
        const balance = await contract.getBalance();
        console.log("Contract Balance:", balance); 



    } catch (error) {
        console.error("Error:", error);
    }
}

..and this is the getBalance function in the contract:

function getBalance() public view returns(uint){
    return address(this).balance;
}

Answer 1

address().balance returns uint256 type.
so you need your solidity code to be:

function getBalance() public view returns(uint256){
    return address(this).balance;
}