Deploy not works

[so0602]

I just create "COIN" project, then "build" -> "deploy", it will show the Deploy Failed popup: cannot estimate gas; transaction may fail or may require manual gas limit

I can see it said it has the default "Gas Limit" & default "Gas" value but seems that it does not work. I tried to input the "Gas Limit" & "Gas" by myself, it also does not work.

[so0602]

Here is error from web version:

Error: cannot estimate gas; transaction may fail or may require manual gas limit (error={"reason":"cannot estimate gas; transaction may fail or may require manual gas limit","code":"UNPREDICTABLE_GAS_LIMIT","error":{"reason":"processing response error","code":"SERVER_ERROR","body":"{\"jsonrpc\":\"2.0\",\"id\":56,\"error\":{\"code\":-32000,\"message\":\"gas required exceeds allowance (0)\"}}\n","error":{"code":-32000},"requestBody":"{\"method\":\"eth_estimateGas\",\"params\":[{\"gasPrice\":\"0x2540be400\",\"from\":\"0xa1736c04138d2226991276a8ced5260cd9c37c39\",\"data\":\"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\"}],\"id\":56,\"jsonrpc\":\"2.0\"}","requestMethod":"POST","url":"https://data-seed-prebsc-1-s1.binance.org:8545"},"method":"estimateGas","transaction":{"from":"0xA1736C04138d2226991276a8CeD5260cd9c37C39","gasPrice":{"type":"BigNumber","hex":"0x02540be400"},"data":"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"}}, tx={"data":"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","from":"0xa1736c04138d2226991276a8ced5260cd9c37c39","gasPrice":{},"nonce":{},"gasLimit":{},"chainId":{}}, code=UNPREDICTABLE_GAS_LIMIT, version=abstract-signer/5.0.13) at lib_esm_Logger.makeError (4.a13049eb.chunk.js:2) at lib_esm_Logger.throwError (4.a13049eb.chunk.js:2) at 4.a13049eb.chunk.js:2 at async Promise.all (index 4)

[qftgtr]

Can you make sure if your signer address has BNB tokens? If not, you could switch to the explorer tab and use the faucet to claim test tokens (on BSC Testnet). If you are using the BSC Mainnet, you need to go to an exchange and buy BNB tokens, and then withdraw them to the address you are using in BSC Studio.

The error message you had is from the BSC node RPC and it doesn't tell whether the failure is because there is no token or gas limit is not enough, so it might be confusing.