Service did not succesfully started

Please help Anton, i had some problem at final step after start the service, and then checking the service occured some error:

root@ubuntu-s-1vcpu-1gb-sgp1-01:~# tail -f /opt/traccar/logs/wrapper.log.*
==> /opt/traccar/logs/wrapper.log.20180918 <==
FINEST|1966/0|Service traccar|18-09-18 07:28:46|        at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3973)
FINEST|1966/0|Service traccar|18-09-18 07:28:46|        at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3909)
FINEST|1966/0|Service traccar|18-09-18 07:28:46|        at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:873)
FINEST|1966/0|Service traccar|18-09-18 07:28:46|        at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1710)
FINEST|1966/0|Service traccar|18-09-18 07:28:46|        at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1226)
FINEST|1966/0|Service traccar|18-09-18 07:28:46|        at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2188)
FINEST|1966/0|Service traccar|18-09-18 07:28:46|        at com.mysql.jdbc.ConnectionImpl.connectWithRetries(ConnectionImpl.java:2035)
FINEST|1966/0|Service traccar|18-09-18 07:28:46|        ... 28 more
INFO|wrapper|Service traccar|18-09-18 07:28:46|waitpid 1966 59136
INFO|wrapper|Service traccar|18-09-18 07:28:46|exit code posix process: 59136 application(status/signal): 231/0

==> /opt/traccar/logs/wrapper.log.20180918.lck <==

Thanks for any advice

Your database server can't connect to the app. check your firewall or connection string or mysql connection settings

Hi Mas Andito, posisi anda di Jogja ya, nomornya belakangnya 552433?

Sudah pernah implement traccar atau baru pertama kali???

@MuhHuz : benar mas, ini baru pertama kali. Nomor mas brp? Atau kontak saya dong via WA di nomor tsb diatas. Thanks.