parse $PRIVATE_KEY as type uint256: digit 10 is out of range for base 10

[billchen-818]

Component

Forge

Have you ensured that all of these are up to date?

• Foundry
• Foundryup

What version of Foundry are you on?

forge 0.2.0 (619f3c5 2023-10-20T00:17:29.281153000Z)

What command(s) is the bug in?

forge script script/Counter.s.sol:CounterScript

Operating System

macOS (Apple Silicon)

Describe the bug

I use a script to deploy the contract and write the deployer's private key (a hexadecimal string, 64 bits in length) in the .env environment variable.When executing the script, reade the PRIVATE_KEY and converte it to uint256,
uint256 deployerPrivateKey = vm.envUint("PRIVATE_KEY");

An error will be reported,
Failed to parse $PRIVATE_KEY as typeuint256: digit 10 is out of range for base 10

[billchen-818]

I understand, the private key needs to be prefixed with '0x'.

[billchen-818]

This is not a bug, the private key needs to be prefixed with '0x'

[mattsse]

we'll add a fallback for 0x again shortly and improve error message, #6041

but it's recommended to use 0x prefix if it's hex

[Chinwuba22]

This is not a bug, the private key needs to be prefixed with '0x'

thanks this helped.