```Error:(33, 6) Kotlin: Type inference failed: No...

# random

[jkbbwr]

Error:(33, 6) Kotlin: Type inference failed: Not enough information to infer parameter P in fun <P : Principal!, P : Principal!> BasicCredentialAuthFilter.Builder<P#1 (type parameter of setAuthenticator)>.setAuthenticator(authenticator: ((BasicCredentials!) -> Optional<P#1!>!)!): AuthFilter.AuthFilterBuilder<BasicCredentials!, P#1!, BasicCredentialAuthFilter<P#1!>!>!
Please specify it explicitly.