'hex data is odd-length' error occured when using web3 & testrpc

Here's my code .

var Web3 = require("C:\\Users\\Administrator\\node_modules\\web3") con_abi = [ { "inputs": [], "name": "sloc111", "outputs": [ { "internalType": "string", "name": "", "type": "string" } ], "stateMutability": "pure", "type": "function" } ] con_addr = "0x0ed72dfd4c63dd97df8fec07e5a6bba466c6adf5"; web3 = new Web3(new Web3.providers.HttpProvider("http://localhost:8545")) var echoContract = new web3.eth.Contract(con_abi,con_addr); // console.log(echoContract.sloc111); // console.log(typeof(echoContract)); echoContract.methods.sloc111().call().then(console.log); 

Error :

Error: hex data is odd-length (argument="value", value="0x0", code=INVALID_ARGUMENT, version=bytes/5.1.0) at Logger.makeError (C:\Users\Administrator\node_modules\@ethersproject\logger\lib\index.js:180:21) at Logger.throwError (C:\Users\Administrator\node_modules\@ethersproject\logger\lib\index.js:189:20) at Logger.throwArgumentError (C:\Users\Administrator\node_modules\@ethersproject\logger\lib\index.js:192:21) at Object.arrayify (C:\Users\Administrator\node_modules\@ethersproject\bytes\lib\index.js:79:24) at AbiCoder.decode (C:\Users\Administrator\node_modules\@ethersproject\abi\lib\abi-coder.js:93:53) at ABICoder.decodeParametersWith (C:\Users\Administrator\node_modules\web3-eth-abi\lib\index.js:304:30) at ABICoder.decodeParameters (C:\Users\Administrator\node_modules\web3-eth-abi\lib\index.js:285:17) at Contract._decodeMethodReturn (C:\Users\Administrator\node_modules\web3-eth-contract\lib\index.js:470:22) at Method.outputFormatter (C:\Users\Administrator\node_modules\web3-eth-contract\lib\index.js:760:42) at Method.formatOutput (C:\Users\Administrator\node_modules\web3-core-method\lib\index.js:147:54) at sendTxCallback (C:\Users\Administrator\node_modules\web3-core-method\lib\index.js:523:33) at C:\Users\Administrator\node_modules\web3-core-requestmanager\lib\index.js:308:9 at XMLHttpRequest.request.onreadystatechange (C:\Users\Administrator\node_modules\web3-providers-http\lib\index.js:9 8:13) at XMLHttpRequestEventTarget.dispatchEvent (C:\Users\Administrator\node_modules\xhr2-cookies\dist\xml-http-request-e vent-target.js:34:22) at XMLHttpRequest._setReadyState (C:\Users\Administrator\node_modules\xhr2-cookies\dist\xml-http-request.js:208:14) at XMLHttpRequest._onHttpResponseEnd (C:\Users\Administrator\node_modules\xhr2-cookies\dist\xml-http-request.js:318: 14) { reason: 'hex data is odd-length', code: 'INVALID_ARGUMENT', argument: 'value', value: '0x0' } 

My TESTRPC version is

EthereumJS TestRPC v6.0.3 (ganache-core: 2.0.2) 

Thank you!