After updating (through -apt update and apt upgrade) access to the installation of MantisBT has become useless. The databases and users are intact.


Access to the server (VPS) through SSH is available and intact.


Code:
The connection to the database has failed. The error returned by the database was # 2054: The server requested authentication method unknown to the client
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Error in phpmyadmin:


Code:
#2054 - The server requested authentication method unknown to the client


mysqli_real_connect(): The server requested authentication method unknown to the client [caching_sha2_password]


mysqli_real_connect(): (HY000/2054): The server requested authentication method unknown to the client
Description: Ubuntu 18.04.2 LTS
Release: 18.04
PHP 7.2.15-0ubuntu0.18.04.1 (cli) (built: Feb 8 2019 14:54:22) ( NTS )
mysql Ver 8.0.15 for Linux on x86_64 (MySQL Community Server - GPL)
Server version: Apache/2.4.29 (Ubuntu)

Screenshot 2019-02-14 at 03.10.12.jpgScreenshot 2019-02-14 at 03.09.30.jpg