Estimate Gas for a Transaction

[dani-s-92]

Hello all,

I deployed a smart contract on polygon mainnet and want to estiamte gas for a transaction.
I have read the questions which are already in the discussion section in this thread, but it does not work for me...

This is my smart contract (It is verified): https://polygonscan.com/address/0x8c181AdebC54362EAC16ab3d4F59E8439355ad22#code

I want to estimate code like this:

const gas = await flash_contract.estimateGas.flashLoan(
      ["0x0d500B1d8E8eF31E21C99d1Db9A6444d3ADf1270"],
      [100000000000000000],
      data
    );

where data is a bytecode and flash_contract is my smart contract created with ethers.Contract(....).
It gives me the error:

Error: cannot estimate gas; transaction may fail or may require manual gas limit [ See: https://links.ethers.org/v5-errors-UNPREDICTABLE_GAS_LIMIT ] (reason="execution reverted", method="estimateGas", transaction={"from":"0x5C42F93937389e73A7317e2108cbcFdECf658002","to":"0x8c181AdebC54362EAC16ab3d4F59E8439355ad22","data":"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","accessList":null}, error={"reason":"processing response error","code":"SERVER_ERROR","body":"{\"jsonrpc\":\"2.0\",\"id\":56,\"error\":{\"code\":-32000,\"message\":\"execution reverted\"}}\n","error":{"code":-32000},"requestBody":"{\"method\":\"eth_estimateGas\",\"params\":[{\"from\":\"0x5c42f93937389e73a7317e2108cbcfdecf658002\",\"to\":\"0x8c181adebc54362eac16ab3d4f59e8439355ad22\",\"data\":\"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\"}],\"id\":56,\"jsonrpc\":\"2.0\"}","requestMethod":"POST","url":"https://skilled-sly-dream.matic.discover.quiknode.pro/fbd58ef38b15bc85d36db970daa194fb95a01a95/"}, code=UNPREDICTABLE_GAS_LIMIT, version=providers/5.7.1)
    at Logger.makeError (c:\Users\danis\arb_gpt\node_modules\@ethersproject\logger\lib\index.js:238:21)
    at Logger.throwError (c:\Users\danis\arb_gpt\node_modules\@ethersproject\logger\lib\index.js:247:20)
    at checkError (c:\Users\danis\arb_gpt\node_modules\@ethersproject\providers\lib\json-rpc-provider.js:122:20)
    at JsonRpcProvider.<anonymous> (c:\Users\danis\arb_gpt\node_modules\@ethersproject\providers\lib\json-rpc-provider.js:751:47)
    at step (c:\Users\danis\arb_gpt\node_modules\@ethersproject\providers\lib\json-rpc-provider.js:48:23)
    at Object.throw (c:\Users\danis\arb_gpt\node_modules\@ethersproject\providers\lib\json-rpc-provider.js:29:53)
    at rejected (c:\Users\danis\arb_gpt\node_modules\@ethersproject\providers\lib\json-rpc-provider.js:21:65)
    at processTicksAndRejections (node:internal/process/task_queues:96:5) {
  reason: 'execution reverted',
  code: 'UNPREDICTABLE_GAS_LIMIT',
  method: 'estimateGas',
  transaction: {
    from: '0x5C42F93937389e73A7317e2108cbcFdECf658002',
    to: '0x8c181AdebC54362EAC16ab3d4F59E8439355ad22',
    data: '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',
    accessList: null
  },
  error: Error: processing response error (body="{\"jsonrpc\":\"2.0\",\"id\":56,\"error\":{\"code\":-32000,\"message\":\"execution reverted\"}}\n", error={"code":-32000}, requestBody="{\"method\":\"eth_estimateGas\",\"params\":[{\"from\":\"0x5c42f93937389e73a7317e2108cbcfdecf658002\",\"to\":\"0x8c181adebc54362eac16ab3d4f59e8439355ad22\",\"data\":\"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\"}],\"id\":56,\"jsonrpc\":\"2.0\"}", requestMethod="POST", url="https://skilled-sly-dream.matic.discover.quiknode.pro/fbd58ef38b15bc85d36db970daa194fb95a01a95/", code=SERVER_ERROR, version=web/5.7.1)
      at Logger.makeError (c:\Users\danis\arb_gpt\node_modules\@ethersproject\logger\lib\index.js:238:21)
      at Logger.throwError (c:\Users\danis\arb_gpt\node_modules\@ethersproject\logger\lib\index.js:247:20)
      at c:\Users\danis\arb_gpt\node_modules\@ethersproject\web\lib\index.js:313:32
      at step (c:\Users\danis\arb_gpt\node_modules\@ethersproject\web\lib\index.js:33:23)
      at Object.next (c:\Users\danis\arb_gpt\node_modules\@ethersproject\web\lib\index.js:14:53)
      at fulfilled (c:\Users\danis\arb_gpt\node_modules\@ethersproject\web\lib\index.js:5:58)
      at processTicksAndRejections (node:internal/process/task_queues:96:5) {
    reason: 'processing response error',
    code: 'SERVER_ERROR',
    body: '{"jsonrpc":"2.0","id":56,"error":{"code":-32000,"message":"execution reverted"}}\n',
    error: Error: execution reverted
        at getResult (c:\Users\danis\arb_gpt\node_modules\@ethersproject\providers\lib\json-rpc-provider.js:191:21)
        at processJsonFunc (c:\Users\danis\arb_gpt\node_modules\@ethersproject\web\lib\index.js:356:22)
        at c:\Users\danis\arb_gpt\node_modules\@ethersproject\web\lib\index.js:288:46
        at step (c:\Users\danis\arb_gpt\node_modules\@ethersproject\web\lib\index.js:33:23)
        at Object.next (c:\Users\danis\arb_gpt\node_modules\@ethersproject\web\lib\index.js:14:53)
        at fulfilled (c:\Users\danis\arb_gpt\node_modules\@ethersproject\web\lib\index.js:5:58)
        at processTicksAndRejections (node:internal/process/task_queues:96:5) {
      code: -32000,
      data: undefined
    },
    requestBody: '{"method":"eth_estimateGas","params":[{"from":"0x5c42f93937389e73a7317e2108cbcfdecf658002","to":"0x8c181adebc54362eac16ab3d4f59e8439355ad22","data":"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"}],"id":56,"jsonrpc":"2.0"}',
    requestMethod: 'POST',
    url: 'https://skilled-sly-dream.matic.discover.quiknode.pro/.../'
  }
}

Is my contract too complex? Does my wallet hold too small amount of matic (I hold 3 matic)?
Is this known to anybody? Will be great if I can get some help here. Thank you!!

[zemse]

The error cannot estimate gas is usually result of a contract revert.

// relevant lines in the error

body: '{"jsonrpc":"2.0","id":56,"error":{"code":-32000,"message":"execution reverted"}}\n'