MyButterfliable fails to connect

gistfile1.txt

mybf@mybf:~/projects/mybutterflies$ raku irc-bots/butterfliable.raku 
◀▬▬ _ Attempting to connect to server
◀▬▬ _ PASS *************
◀▬▬ _ NICK MyButterfliable
◀▬▬ _ USER MyButterfliable MyButterfliable irc.libera.chat :Raku IRC::Client v4.0.0
▬▬▶ _ Connection closed
▬▬▶ _ :calcium.libera.chat NOTICE * *** Checking Ident
▬▬▶ _ :calcium.libera.chat NOTICE * *** Looking up your hostname...
▬▬▶ _ :calcium.libera.chat NOTICE * *** Couldn't look up your hostname
▬▬▶ _ :calcium.libera.chat NOTICE * *** No Ident response
▬▬▶ _ :calcium.libera.chat NOTICE MyButterfliable *** Notice -- SASL authentication to a NickServ account with a verified email address is required to connect from your current network. Please see https://libera.chat/guides/sasl for configuration assistance.

.run with IRC::Client.new:
    :nick<MyButterfliable>
    :username<MyButterfliable>
    :password(%*ENV<LIBERA_SASL_PASSWORD>)
    :host<irc.libera.chat>
    :channels($channel)
    :debug
    :plugins(ButterflyBot.new)