The user specified as a definer ('root'@'%') does not exist【親測可用，服務器端】

解析：

權限問題，授權 給 root  所有sql 權限

mysql> grant all privileges on *.* to root@"%" identified by ".";
Query OK, 0 rows affected (0.00 sec)

mysql> flush privileges;

Query OK, 0 rows affected (0.00 sec)