Error: cannot estimate gas;

[stoplion]

const estimatedGas = await MyContract.estimateGas.sendMessage("my message")

Error: cannot estimate gas; transaction may fail or may require manual gas limit

Do I need to send a overrides.value with the method? (it is a payable method) even though I'm just checking the gas w estimateGas (not actually calling the method)?

Also, what is meant by setting manual gas limit?

[stoplion]

Ok, figured it out. Yes, seems you have to send the value to method (even is just checking the gas price)

[zemse]

Hey @stoplion, for a payable method if you don't pass the value override, then it takes it as 0 ETH. So is your contract method sendMessage have any require statement that msg.value should be greater than a given amount? In that case 0 value would revert and hence you'd get cannot estimate gas error.

Also, what is meant by setting manual gas limit?

When you pass a gasLimit override, it's called setting manual gas limit. When you do this, the gas estimation step is skipped by ethers js. In fact, the gas estimation step tries to estimate the gasLimit value under the hood.

[jahvi]

When you pass a gasLimit override, it's called setting manual gas limit. When you do this, the gas estimation step is skipped by ethers js.

@zemse Is this still the case? I'm having an issue at #2602 where this doesn't seem to happen.