Mismatched type for flag 'validators-external-signer-public-keys'

[kajeagentspi]

Describe the bug

This error popsup when you set validators-external-signer-public-keys as a /api/v1/eth2/publicKeys url or if you put a string like in the docs.
time="2024-12-23T08:49:35Z" level=error msg="Mismatched type for flag 'validators-external-signer-public-keys'. Expected '[]interface{}' but actual is 'string'" prefix=main

Also is it normal that prysm validator doesn't check if the web3signer instance is active when the keys are not yet activated?

Has this worked before in a previous version?

Not sure

🔬 Minimal Reproduction

1. start validator with this in config

validators-external-signer-url: http://10.2.0.7:29000
validators-external-signer-public-keys: 0xkey #or http://web3sin/api/v1/eth2/publicKeys

Error

No response

Platform(s)

No response

What version of Prysm are you running? (Which release)

5.1.2 , 5.2.0

Anything else relevant (validator index / public key)?

No response

[james-prysm]

seems correct, this shouldn't have changed in either of those versions will come back with findings

[james-prysm]

please use an array in the config file
validators-external-signer-public-keys: ["0xhexkey or http://web3sin/api/v1/eth2/publicKeys"]

let me know if you have any issues with this. I'll close this ticket next week if there's no response.