Authentication failed on binlogrouter service

[db_11]

type=server

address=172.16.13.9

port=3306

protocol=MariaDBBackend

[db_12]

type=server

address=172.16.12.5

port=3306

protocol=MariaDBBackend

[MariaDB-Monitor]

type=monitor

module=mariadbmon

servers=db_11,db_12

user=maxscale_user

password=maxscale_pass

monitor_interval=2s

auto_failover=false

auto_rejoin=false

[Replication-Proxy]

type=service

router=binlogrouter

cluster=MariaDB-Monitor

select_master=true

expire_log_duration=5h

expire_log_minimum_files=3

user=maxscale_user

password=maxscale_pass

[Replication-Listener]

type=listener

service=Replication-Proxy

protocol=MariaDBClient

port=3303

2022-02-01 23:21:02   notice : The systemd watchdog is Enabled. Internal timeout = 30s

2022-02-01 23:21:02   notice : Worker message queue size: 1MiB

2022-02-01 23:21:02   notice : Using up to 18.77GiB of memory for query classifier cache

2022-02-01 23:21:02   notice : syslog logging is enabled.

2022-02-01 23:21:02   notice : maxlog logging is enabled.

2022-02-01 23:21:02   notice : Running OS: Linux@4.18.0-358.el8.x86_64, #1 SMP Mon Jan 10 13:11:20 UTC 2022, x86_64 with 40 processor cores.

2022-02-01 23:21:02   notice : Total usable main memory: 125.14GiB.

2022-02-01 23:21:02   notice : MariaDB MaxScale 2.5.16 started (Commit: 34282097d0d149abb22c4d272da1da47415eb775)

2022-02-01 23:21:02   notice : MaxScale is running in process 245268

2022-02-01 23:21:02   notice : Configuration file: /etc/maxscale.cnf

2022-02-01 23:21:02   notice : Log directory: /var/log/maxscale

2022-02-01 23:21:02   notice : Data directory: /var/lib/maxscale

2022-02-01 23:21:02   notice : Module directory: /usr/lib64/maxscale

2022-02-01 23:21:02   notice : Service cache: /var/cache/maxscale

2022-02-01 23:21:02   notice : Working directory: /var/log/maxscale

2022-02-01 23:21:02   notice : Loaded module qc_sqlite: V1.0.0 from /usr/lib64/maxscale/libqc_sqlite.so

2022-02-01 23:21:02   notice : Query classification results are cached and reused. Memory used per thread: 480.55MiB

2022-02-01 23:21:02   notice : Password encryption key file '/var/lib/maxscale/.secrets' not found, using configured passwords as plaintext.

2022-02-01 23:21:02   notice : MaxScale started with 40 worker threads, each with a stack size of 8388608 bytes.

2022-02-01 23:21:02   notice : Loading /etc/maxscale.cnf.

2022-02-01 23:21:02   notice : /etc/maxscale.cnf.d does not exist, not reading.

2022-02-01 23:21:02   notice : Loaded module MariaDBClient: V1.1.0 from /usr/lib64/maxscale/libmariadbclient.so

2022-02-01 23:21:02   notice : Loaded module binlogrouter: V1.0.0 from /usr/lib64/maxscale/libbinlogrouter.so

2022-02-01 23:21:02   notice : Loaded module mariadbmon: V1.5.0 from /usr/lib64/maxscale/libmariadbmon.so

2022-02-01 23:21:02   warning: (Replication-Proxy) No (replication) master found. Retrying silently until one is found.

2022-02-01 23:21:02   notice : (Replication-Listener) Loaded module MariaDBAuth: V2.1.0 from /usr/lib64/maxscale/libmariadbauth.so

2022-02-01 23:21:02   notice : Started REST API on [0.0.0.0]:8989

2022-02-01 23:21:02   notice : 'db_12' sent version string '10.4.22-MariaDB-log'. Detected type: 'MariaDB', version: 10.4.22.

2022-02-01 23:21:02   notice : 'db_11' sent version string '10.4.15-MariaDB-log'. Detected type: 'MariaDB', version: 10.4.15.

2022-02-01 23:21:02   notice : Server 'db_12' charset: latin1

2022-02-01 23:21:02   notice : Server 'db_11' charset: latin1

2022-02-01 23:21:02   notice : Starting a total of 1 services...

2022-02-01 23:21:02   notice : (Replication-Listener) Listening for connections at [::]:3303

2022-02-01 23:21:02   notice : Service 'Replication-Proxy' started (1/1)

2022-02-01 23:21:03   notice : Read 28 user@host entries from 'db_11' for service 'Replication-Proxy'.

2022-02-01 23:21:12   error  : (Replication-Proxy) Error received during replication from '172.16.13.9:3306': Failed to fetch binlog event from master: Could not find GTID state requested by slave in any binlog files. Probably the slave state is too old and required binlog files have been purged.