Cannot read property 'toHexString' of null

[rjkz808]

Description

When I'm trying to call the ethers.Contract function (with a uint type argument(s)) I'm getting the next error:

TypeError: Cannot read property 'toHexString' of null

The stack trace leads me to the ethers.utils.bigNumberify method. I tried to convert args to BigNumber, string, number (using parseInt), BN (why not) - all this tries failed. Initial values are normal integers, when I call the same methods using web3 all is fine. What can be wrong? Thanks in advance for your help 😄

Versions

• web3 1.0.0-beta.37
• ethers 4.0.27

[ricmoo]

Can you include a code snippet? :)

[rjkz808]

Can you include a code snippet? :)

Sure, https://gist.github.com/rjkz808/e94afacb1bfe8a0279dbdcb4cbb26a8a

[rjkz808]

I've finally found that ethers.js requires from me to specify the gas limit for every tx. This issue can be closed 😄

[jannunen]

And for those who are thinking "how do I specify the gas limit...".

contractWithSigner.theFunctionYouAreCalling(parameters, { gasLimit : 10})

[mamirpanah]

After not finding how to call web3.utils.toHex(), just searched in the git repo of geth client and found out how to convert decimals to hex:

Web3.prototype.toHex('8000000')

[ricmoo]

@mamirpanah You probably want ethers.hexlify("800000"). :)