The server time zone value 'xxxxxx' is unrecognized or represents more than one time zone

The server time zone value ‘?й???????‘ is unrecognized or represents more than one time zone. You must configure either the server or JDBC driver (via the ‘serverTimezone‘ configuration property) to use a more specifc time zone value if you want to utilize time zone support.

mysql> show variables like ‘%time_zone%‘;
+------------------+--------+
| Variable_name    | Value  |
+------------------+--------+
| system_time_zone |        |
| time_zone        | SYSTEM |
+------------------+--------+
2 rows in set, 1 warning (0.00 sec)

mysql> select now();
+---------------------+
| now()               |
+---------------------+
| 2020-05-13 14:09:28 |
+---------------------+
1 row in set (0.02 sec)

mysql> select now();
+---------------------+
| now()               |
+---------------------+
| 2020-05-13 14:10:51 |
+---------------------+
1 row in set (0.00 sec)

mysql> set time_zone=SYSTEM;
Query OK, 0 rows affected (0.02 sec)

mysql> select now();
+---------------------+
| now()               |
+---------------------+
| 2020-05-13 14:11:13 |
+---------------------+
1 row in set (0.00 sec)

mysql> set global time_zone=‘+8:00‘;
Query OK, 0 rows affected (0.00 sec)

mysql> flush privileges;
Query OK, 0 rows affected (0.04 sec)

mysql>