Hi @milonic,
The message is cristal clear: You must downgrade your php to 8.3, since nc 30 does not support php8.4
Unfortunately you ignored the support template, so I don’t know what OS you are on, but if you are on a Ubuntu or Debian, you can do the downgrade without much hussle with the → php-updater script
h.t.h.
Much and good luck,
ernolf