One of my devices is showing 'Offline.' Tried rebooting but no joy. How do I begin troubleshooting?

I haven’t made any configuration changes. Successfully streamed music using that device earlier this week, but today it’s showing ‘Offline.’ I can see both its MAC and IP on the network. Where to start?

Edit: Logs available here: https://www.dropbox.com/s/as5icbg2jilt6l0/balena-sound_back%20porch-14.03.21_08%2038%2038_(-0400).txt?dl=1

Edit: Issued these commands from the other working device:

root@22447d3:~# nmcli device status
DEVICE           TYPE      STATE      CONNECTION         
eth0             ethernet  connected  Wired connection 1 
wlan0            wifi      connected  resin-wifi-01      
supervisor0      bridge    connected  supervisor0        
balena0          bridge    unmanaged  --                 
br-29a3e4988a02  bridge    unmanaged  --                 
resin-dns        bridge    unmanaged  --                 
veth10918e6      ethernet  unmanaged  --                 
vethdf9f9ea      ethernet  unmanaged  --                 
vethf141fb8      ethernet  unmanaged  --                 
lo               loopback  unmanaged  --                 
resin-vpn        tun       unmanaged  --  

root@22447d3:~# ip link show
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel qlen 1000
    link/ether b8:27:eb:44:96:ab brd ff:ff:ff:ff:ff:ff
3: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel qlen 1000
    link/ether b8:27:eb:11:c3:fe brd ff:ff:ff:ff:ff:ff
4: resin-dns: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue qlen 1000
    link/ether 42:88:a7:30:8d:d9 brd ff:ff:ff:ff:ff:ff
5: supervisor0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue 
    link/ether 02:42:5f:87:8c:7e brd ff:ff:ff:ff:ff:ff
6: balena0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue 
    link/ether 02:42:87:42:b6:3b brd ff:ff:ff:ff:ff:ff
7: br-29a3e4988a02: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue 
    link/ether 02:42:ab:c3:64:37 brd ff:ff:ff:ff:ff:ff
10: vethdf9f9ea@if9: <BROADCAST,MULTICAST,UP,LOWER_UP,M-DOWN> mtu 1500 qdisc noqueue master br-29a3e4988a02 
    link/ether 76:f5:05:e0:c0:27 brd ff:ff:ff:ff:ff:ff
12: vethf141fb8@if11: <BROADCAST,MULTICAST,UP,LOWER_UP,M-DOWN> mtu 1500 qdisc noqueue master br-29a3e4988a02 
    link/ether 62:54:bb:f1:f9:04 brd ff:ff:ff:ff:ff:ff
14: veth10918e6@if13: <BROADCAST,MULTICAST,UP,LOWER_UP,M-DOWN> mtu 1500 qdisc noqueue master br-29a3e4988a02 
    link/ether 32:43:42:da:4c:e1 brd ff:ff:ff:ff:ff:ff
17: resin-vpn: <POINTOPOINT,MULTICAST,NOARP,UP,LOWER_UP> mtu 1500 qdisc fq_codel qlen 100
    link/[65534]