18.04.1 java problem

My install of 18.04.1 had no Java, but a previous post here fixed that. I now have, java-11-openjdk, installed.
Then I’ve done the,

fix for the accessibility bug.

But now when I try to use GPSARPro, from the terminal I get these messages, after the program crashes.

mike@Mikes-mate:~$ cd GpsarPro/v5.8/distributionGpsarPro
mike@Mikes-mate:~/GpsarPro/v5.8/distributionGpsarPro$ sh gpsarPro.sh
java.text.ParseException: cannot read MAC address for 127.0.1.1 from [enp3s0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        ether a0:f3:c1:01:c2:7d  txqueuelen 1000  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

enp4s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 10.1.1.44  netmask 255.255.255.0  broadcast 10.1.1.255
        inet6 fd63:c744:a829:0:4889:f6f9:90d8:3485  prefixlen 64  scopeid 0x0<global>
        inet6 fe80::bec1:a796:5279:ce66  prefixlen 64  scopeid 0x20<link>
        inet6 fd63:c744:a829:0:f781:22c5:d19d:dac7  prefixlen 64  scopeid 0x0<global>
        ether 60:a4:4c:58:da:f5  txqueuelen 1000  (Ethernet)
        RX packets 21052  bytes 17829071 (17.8 MB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 12868  bytes 2018073 (2.0 MB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1000  (Local Loopback)
        RX packets 1594  bytes 142656 (142.6 KB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 1594  bytes 142656 (142.6 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

]
	at gn.b(Unknown Source)
	at gn.a(Unknown Source)
	at B.<clinit>(Unknown Source)
	at gV.run(Unknown Source)
java.text.ParseException: cannot read MAC address for 127.0.1.1 from [enp3s0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        ether a0:f3:c1:01:c2:7d  txqueuelen 1000  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

enp4s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 10.1.1.44  netmask 255.255.255.0  broadcast 10.1.1.255
        inet6 fd63:c744:a829:0:4889:f6f9:90d8:3485  prefixlen 64  scopeid 0x0<global>
        inet6 fe80::bec1:a796:5279:ce66  prefixlen 64  scopeid 0x20<link>
        inet6 fd63:c744:a829:0:f781:22c5:d19d:dac7  prefixlen 64  scopeid 0x0<global>
        ether 60:a4:4c:58:da:f5  txqueuelen 1000  (Ethernet)
        RX packets 21052  bytes 17829071 (17.8 MB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 12868  bytes 2018073 (2.0 MB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1000  (Local Loopback)
        RX packets 1594  bytes 142656 (142.6 KB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 1594  bytes 142656 (142.6 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

]
	at gn.b(Unknown Source)
	at gn.a(Unknown Source)
	at B.<clinit>(Unknown Source)
	at gV.run(Unknown Source)
java.io.IOException: cannot read MAC address for 127.0.1.1 from [enp3s0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        ether a0:f3:c1:01:c2:7d  txqueuelen 1000  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

enp4s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 10.1.1.44  netmask 255.255.255.0  broadcast 10.1.1.255
        inet6 fd63:c744:a829:0:4889:f6f9:90d8:3485  prefixlen 64  scopeid 0x0<global>
        inet6 fe80::bec1:a796:5279:ce66  prefixlen 64  scopeid 0x20<link>
        inet6 fd63:c744:a829:0:f781:22c5:d19d:dac7  prefixlen 64  scopeid 0x0<global>
        ether 60:a4:4c:58:da:f5  txqueuelen 1000  (Ethernet)
        RX packets 21052  bytes 17829071 (17.8 MB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 12868  bytes 2018073 (2.0 MB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1000  (Local Loopback)
        RX packets 1594  bytes 142656 (142.6 KB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 1594  bytes 142656 (142.6 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

]
	at gn.a(Unknown Source)
	at B.<clinit>(Unknown Source)
	at gV.run(Unknown Source)
mike@Mikes-mate:~/GpsarPro/v5.8/distributionGpsarPro$ 

Any idea what this is all about?
And what should I do about it?

Please.

PS, as far as I know GPSARPro doesn’t need to go online

I just installed freeplane as a test and that seems to work OK, (not that I have any idea what it does). So it may not be the java software at fault, But the same GPSRARPro works fine in 16.04.1