Hello,

fresh install of Mint 20 and getting this Error Message from CQRLOG:
Error during connection to database: Can not load default MySQL library ("libmysqlclient.so.20" or "libmysqlclient.so"). Check your installation.

mysqlerr:

2020-12-09 20:03:17 0 [Note] InnoDB: Using Linux native AIO
2020-12-09 20:03:17 0 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
2020-12-09 20:03:17 0 [Note] InnoDB: Uses event mutexes
2020-12-09 20:03:17 0 [Note] InnoDB: Compressed tables use zlib 1.2.11
2020-12-09 20:03:17 0 [Note] InnoDB: Number of pools: 1
2020-12-09 20:03:17 0 [Note] InnoDB: Using SSE2 crc32 instructions
2020-12-09 20:03:17 0 [Note] InnoDB: Initializing buffer pool, total size = 80M, instances = 1, chunk size = 80M
2020-12-09 20:03:17 0 [Note] InnoDB: Completed initialization of buffer pool
2020-12-09 20:03:17 0 [Note] InnoDB: If the mysqld execution user is authorized, page cleaner thread priority can be changed. See the man page of setpriority().
2020-12-09 20:03:17 0 [Note] InnoDB: 128 out of 128 rollback segments are active.
2020-12-09 20:03:17 0 [Note] InnoDB: Creating shared tablespace for temporary tables
2020-12-09 20:03:17 0 [Note] InnoDB: Setting file './ibtmp1' size to 12 MB. Physically writing the file full; Please wait ...
2020-12-09 20:03:17 0 [Note] InnoDB: File './ibtmp1' size is now 12 MB.
2020-12-09 20:03:17 0 [Note] InnoDB: 10.3.25 started; log sequence number 1602128; transaction id 9
2020-12-09 20:03:17 0 [Note] InnoDB: Loading buffer pool(s) from /home/meier/.config/cqrlog/database/ib_buffer_pool
2020-12-09 20:03:17 0 [Note] InnoDB: Buffer pool(s) load completed at 201209 20:03:17
2020-12-09 20:03:17 0 [Note] Plugin 'FEEDBACK' is disabled.
2020-12-09 20:03:17 0 [ERROR] Can't open and lock privilege tables: Table 'mysql.servers' doesn't exist
2020-12-09 20:03:17 0 [Note] Server socket created on IP: '::'.
2020-12-09 20:03:17 0 [Warning] Can't open and lock time zone table: Table 'mysql.time_zone_leap_second' doesn't exist trying to live without them
2020-12-09 20:03:17 6 [Warning] Failed to load slave replication state from table mysql.gtid_slave_pos: 1017: Can't find file: './mysql/' (errno: 2 "No such file or directory")
2020-12-09 20:03:17 0 [Note] Reading of all Master_info entries succeeded
2020-12-09 20:03:17 0 [Note] Added new Master_info '' to hash table
2020-12-09 20:03:17 0 [Note] /usr/sbin/mysqld: ready for connections.
Version: '10.3.25-MariaDB-0ubuntu0.20.04.1' socket: '/home/meier/.config/cqrlog/database/sock' port: 64000 Ubuntu 20.04