the web service does not start

Please help me solve the problem with the Netflow Analyser web service. Before restarting the server, everything worked correctly, and after restarting the service does not start.

Previously, access was carried out via tcp/8080 port. But today it was configured to use a tcp/https connection using a self-signed certificate. After these settings, the server was restarted and access was lost.

user@ubuntu:~$ sudo netstat -ntlp | grep LISTEN

tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      1081/sshd
tcp        0      0 127.0.0.1:13306         0.0.0.0:*               LISTEN      5635/postgres
tcp        0      0 127.0.0.1:32000         0.0.0.0:*               LISTEN      5597/java
tcp6       0      0 :::8080                 :::*                    LISTEN      5597/java
tcp6       0      0 :::22                   :::*                    LISTEN      1081/sshd
tcp6       0      0 ::1:13306               :::*                    LISTEN      5635/postgres
tcp6       0      0 :::34878                :::*                    LISTEN      5597/java
tcp6       0      0 :::43970                :::*                    LISTEN      5597/java