Erro

[warm parcel]

! [NOTE] It is highly recommended to not use "localhost" as your database host as we have seen frequent socket
! connection issues. If you want to use a local connection you should be using "127.0.0.1".

! [NOTE] Using the "root" account for MySQL connections is not only highly frowned upon, it is also not allowed by this
! application. You'll need to have created a MySQL user for this software.

In Connection.php line 760:

SQLSTATE[HY000] [2054] Server sent charset (0) unknown to the client. Please, report to the developers (Connection:
mysql, SQL: select * from information_schema.tables where table_schema = painell and table_name = migrations and t
able_type = 'BASE TABLE')

In Connector.php line 65:

SQLSTATE[HY000] [2054] Server sent charset (0) unknown to the client. Please, report to the developers

[dire skiff]

@warm parcel; Change character-set-collations in /etc/mysql/mariadb.conf.d/50-server.cnf to utf8mb4=utf8mb4_general_ci.
Restart mariadb after changing the config file.

[warm parcel]

[ERROR] Unable to connect to the MySQL server using the provided credentials. The error returned was "SQLSTATE[HY000]
[2054] Server sent charset (0) unknown to the client. Please, report to the developers".

[ERROR] Your connection credentials have NOT been saved. You will need to provide valid connection information before
proceeding.

[dire skiff]

@warm parcel; Change character-set-collations in /etc/mysql/mariadb.conf.d/50-server.cnf to utf8mb4=utf8mb4_general_ci.
Restart mariadb after changing the config file.

[warm parcel]

CSRF token mismatch.

[dire skiff]

@warm parcel; Enable SSL for your Panel with HTTPS protocol scheme in the APP_URL, or set SESSION_SECURE_COOKIE to false in your .env which is a hidden file located at /var/www/pterodactyl.

You can open it directly with nano /var/www/pterodactyl/.env. Refresh config cache with cd /var/www/pterodactyl && php artisan config:clear