MariaDB NO_PUBKEY - Ubuntu 20.04 LTS

When installing the latest version of Hestia on Ubuntu 20.04 LTS, there was an error when installing MariaDB and public key. Now this error keeps coming up when installing updates:
Err:8 https://dlm.mariadb.com/repo/mariadb-server/10.6/repo/ubuntu focal InRelease
The following signatures cannot be verified because the public key is not available: NO_PUBKEY F1656F24C74CD1D8

Help fix it!

It is impossible to reinstall Ubuntu. Sevrer only remotely.

so add the key

apt-key adv --keyserver keyserver.ubuntu.com --recv-keys F1656F24C74CD1D8
apt update
apt upgrade

This way doesn’t work.
“gpg: key F1656F24C74CD1D8: “MariaDB Signing Key [email protected]” not changed”
The error does not go anywhere.

а так ?
apt-key adv --fetch-keys ‘https://mariadb.org/mariadb_release_signing_key.asc

Та же история. Сначала написала что синтаксис адреса нарушен, заменил кавычки и убрал их совсем. Ситуация не изменилась.
Same thing. First wrote that the address syntax is broken, replaced the quotes and removed them altogether. The situation has not changed.

Это с офф сайта

Выбери свою ОС и т.д.

К сожалению не работает. Уже попробовал сверху накататить установку
sudo apt install mariadb-server
ошибка ключа F1656F24C74CD1D8 сохранилась.

Unfortunately, it does not work. Already tried installing over the top
sudo apt install mariadb-server
The key error F1656F24C74CD1D8 is still present.

working for me (had the same issue in 22.04 with latest Hestia 1.8.8):
gpg --no-default-keyring --keyring /usr/share/keyrings/mariadb-keyring.gpg --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys F1656F24C74CD1D8