
What to do?
On previous step database connection success.
And when I write this to hostname: localhost?transaction-isolation=READ-COMMITTED
Then I get this error below:

I have MySQL 8.0 and here is it's conf:
[mysqld]
#
# * Basic Settings
#
user = mysql
# pid-file = /var/run/mysqld/mysqld.pid
# socket = /var/run/mysqld/mysqld.sock
# port = 3306
# datadir = /var/lib/mysql
transaction-isolation=READ-COMMITTED
character-set-server=utf8mb4
collation-server=utf8mb4_bin
default-storage-engine=INNODB
max_allowed_packet=256M
innodb_log_file_size=2GB
sql_mode = NO_AUTO_VALUE_ON_ZERO
binlog_format=row
log_bin_trust_function_creators = 1
#optimizer_switch = derived_merge=off