问题描述
我正在尝试调用“fetchPairData”函数 (https://uniswap.org/docs/v2/SDK/fetcher/),但出现以下错误。
Error: call revert exception (method="getReserves()",errorSignature=null,errorArgs=[null],reason=null,code=CALL_EXCEPTION,version=abi/5.1.2)
at Logger.makeError (C:\Users\*\Desktop\ProyectoTransaccion\v2\node_modules\@ethersproject\logger\lib\index.js:180:21)
at Logger.throwError (C:\Users\*\Desktop\ProyectoTransaccion\v2\node_modules\@ethersproject\logger\lib\index.js:189:20)
at Interface.decodefunctionResult (C:\Users\*\Desktop\ProyectoTransaccion\v2\node_modules\@ethersproject\abi\lib\interface.js:289:23)
at Contract.<anonymous> (C:\Users\*\Desktop\ProyectoTransaccion\v2\node_modules\@ethersproject\contracts\lib\index.js:329:56)
at step (C:\Users\*\Desktop\ProyectoTransaccion\v2\node_modules\@ethersproject\contracts\lib\index.js:48:23)
at Object.next (C:\Users\*\Desktop\ProyectoTransaccion\v2\node_modules\@ethersproject\contracts\lib\index.js:29:53)
at fulfilled (C:\Users\*\Desktop\ProyectoTransaccion\v2\node_modules\@ethersproject\contracts\lib\index.js:20:58)
at processticksAndRejections (internal/process/task_queues.js:93:5) {
reason: null,code: 'CALL_EXCEPTION',method: 'getReserves()',errorSignature: null,errorArgs: [ null ],address: '0x80f836E71a6C92acebf6A49ad39038609c780070',args: [],transaction: {
data: '0x0902f1ac',to: '0x80f836E71a6C92acebf6A49ad39038609c780070'
}
}
相关代码:
const {ChainId,Token,TokenAmount,Fetcher,Pair,Route,Trade,TradeType,Percent} = require('@pancakeswap-libs/sdk');
const INPUT_TOKEN = new Token(ChainId.MAINNET,InputTokenAddr,18);
const OUTPUT_TOKEN = new Token(ChainId.MAINNET,OutputTokenAddr,18);
try {
pair = await Fetcher.fetchPairData(INPUT_TOKEN,OUTPUT_TOKEN,provider);
} catch (ex)
{
console.log("Debug.INPUT_TOKEN: " + JSON.stringify(INPUT_TOKEN));
console.log("Debug.OUTPUT_TOKEN: " + JSON.stringify(OUTPUT_TOKEN));
console.log("Debug.provider: " + JSON.stringify(provider));
console.log(ex)
pair = null;
}
调试:
Debug.INPUT_TOKEN: {"decimals":18,"chainId":56,"address":"0xbb4CdB9CBd36B01bD1cBaEBF2De08d9173bc095c"}
Debug.OUTPUT_TOKEN: {"decimals":18,"address":"0xe9e7CEA3DedcA5984780Bafc599bD69ADd087D56"}
Debug.provider: {"_isProvider":true,"_events":[],"_emitted":{"block":-2},"formatter":{"formats":{"transaction":{},"transactionRequest":{},"receiptLog":{},"receipt":{},"block":{},"blockWithTransactions":{},"filter":{},"filterLog":{}}},"anyNetwork":false,"_networkPromise":{},"_maxInternalBlockNumber":-1024,"_lastBlockNumber":-2,"_pollingInterval":4000,"_fastQueryDate":0,"connection":{"url":"https://bsc-dataseed.binance.org/"},"_nextId":45,"_eventLoopCache":{"detectNetwork":null,"eth_chainId":null},"_network":{"chainId":56,"name":"unkNown"}}
我已验证交换在 pancakeswap 网络界面中正常工作。网上没有标明路由,所以好像是直接swap。
对于其他令牌,调用返回预期的内容。例如,WBNB、BUSD 对。
I found for this error on another site with this comment
我遇到了同样的问题,问题是我试图获取 不存在的池的价格。
池存在。它有流动性,而且是直接的,不需要路由。
解决方法
调用恢复异常发生在
-
客户端没有收到响应
(地址上没有部署合约)
-
或者当合约代码执行恢复时。
pragma solidity ^0.8; contract MyContract { function foo() external view { revert(); } }
(当你调用一个未定义的函数并且合约中没有
fallback()
时也可以)
您的问题没有说明您尝试在哪个网络上执行呼叫,但在 mainnet 和 testnet 上都没有关于失败地址的合同。
因此,要么您的客户端应用试图直接调用这个不存在的合约,要么调用链中的某个合约试图调用它。
transaction: {
data: '0x0902f1ac',to: '0x80f836E71a6C92acebf6A49ad39038609c780070'
}