utf8mb3 error message in zabbix server log in 5.0.26 appliance

1433:20220725:111333.821 cannot set MySQL character set to "utf8mb3"
1433:20220725:111434.062 cannot set MySQL character set to "utf8mb3"
1433:20220725:111535.441 cannot set MySQL character set to "utf8mb3"
1433:20220725:111636.813 cannot set MySQL character set to "utf8mb3"

mysql> SELECT DEFAULT_CHARACTER_SET_NAME, DEFAULT_COLLATION_NAME FROM INFORMATION_SCHEMA.SCHEMATA WHERE SCHEMA_NAME = "zabbix";
+----------------------------+------------------------+
| DEFAULT_CHARACTER_SET_NAME | DEFAULT_COLLATION_NAME |
+----------------------------+------------------------+
| utf8                       | utf8_bin               |
+----------------------------+------------------------+
1 row in set (0.00 sec)

[root@appliance ~]# mysql -V
mysql  Ver 8.0.26 for Linux on x86_64 (Source distribution)