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Intermittent `localhost err_connection_refused` error on browser



  • Hello!
    I know there are many articles addressing this already, but I haven’t found one to work yet so hoping someone can shed new light.

    MM 2.7.0 on an RaspberryPi Zero W and chromium

    MM was working after initial setup, I was tweaking modules just to get my initial layout all set (occasionally getting the “please use a config.js” message, fixing my js then it worked again…
    So now the issue:
    Twice now after pm2 restart mmrestart from just changing config.js I get the browser page that the Site can't be reached... localhost refused to connect

    1st time it happened I started going back through the whole setup again doing npm install, etc and nothing worked. I was just about to burn the whole thing down when…
    Finally after one more sudo reboot after no changes… it just worked.
    This time, it’s not coming back yet.

    tail -n 50 ~/.pm2/logs/mmstart-out.log:

    wm_set_cursor_visibility: visible using XCreateFontCursor
    Starting MagicMirror: v2.7.1
    Loading config ...
    Loading module helpers ...
    No helper found for module: alert.
    Initializing new module helper ...
    Module helper loaded: updatenotification
    No helper found for module: clock.
    Initializing new module helper ...
    Module helper loaded: MMM-CalendarExt
    Loading module helpers ...
    No helper found for module: alert.
    Initializing new module helper ...
    Module helper loaded: updatenotification
    No helper found for module: clock.
    Initializing new module helper ...
    Module helper loaded: MMM-CalendarExt
    Whoops! There was an uncaught exception...
    MagicMirror will not quit, but it might be a good idea to check why this happened. Maybe no internet connection?
    If you think this really is an issue, please open an issue on GitHub: https://github.com/MichMich/MagicMirror/issues
    wm_set_cursor_visibility: visible using XCreateFontCursor
    Starting MagicMirror: v2.7.1
    Loading config ...
    Loading module helpers ...
    No helper found for module: alert.
    Initializing new module helper ...
    Module helper loaded: updatenotification
    No helper found for module: clock.
    Initializing new module helper ...
    Module helper loaded: MMM-CalendarExt
    Loading module helpers ...
    No helper found for module: alert.
    Initializing new module helper ...
    Module helper loaded: updatenotification
    No helper found for module: clock.
    Initializing new module helper ...
    Module helper loaded: MMM-CalendarExt
    Whoops! There was an uncaught exception...
    MagicMirror will not quit, but it might be a good idea to check why this happened. Maybe no internet connection?
    If you think this really is an issue, please open an issue on GitHub: https://github.com/MichMich/MagicMirror/issues
    

    nmap -A -T4 localhost:

    Starting Nmap 7.40 ( https://nmap.org ) at 2019-04-24 06:55 EDT
    Nmap scan report for localhost (127.0.0.1)
    Host is up (0.0021s latency).
    Other addresses for localhost (not scanned): ::1
    Not shown: 998 closed ports
    PORT    STATE SERVICE VERSION
    22/tcp  open  ssh     (protocol 2.0)
    | fingerprint-strings:
    |   NULL:
    |_    SSH-2.0-OpenSSH_7.4p1 Raspbian-10+deb9u4
    | ssh-hostkey:
    |   2048 66:12:9f:31:9f:17:1c:07:1e:f4:73:e5:66:95:ea:1a (RSA)
    |_  256 17:08:1d:39:a9:ff:3f:1d:5a:66:c7:2a:e6:36:78:5f (ECDSA)
    111/tcp open  rpcbind 2-4 (RPC #100000)
    | rpcinfo:
    |   program version   port/proto  service
    |   100000  2,3,4        111/tcp  rpcbind
    |_  100000  2,3,4        111/udp  rpcbind
    1 service unrecognized despite returning data. If you know the service/version, please submit the following fingerprint at https://nmap.org/cgi-bin/submit.cgi?new-service :
    SF-Port22-TCP:V=7.40%I=7%D=4/24%Time=5CC040A8%P=arm-unknown-linux-gnueabih
    SF:f%r(NULL,29,"SSH-2\.0-OpenSSH_7\.4p1\x20Raspbian-10\+deb9u4\n");
    
    Service detection performed. Please report any incorrect results at https://nmap.org/submit/ .
    Nmap done: 1 IP address (1 host up) scanned in 23.12 seconds
    

    /etc/hosts/:

    127.0.0.1       localhost
    ::1             localhost ip6-localhost ip6-loopback
    ff02::1         ip6-allnodes
    ff02::2         ip6-allrouters
    
    127.0.1.1       juddpi
    

    sudo iptables -L --verbose:

    Chain INPUT (policy ACCEPT 0 packets, 0 bytes)
     pkts bytes target     prot opt in     out     source               destination
    
    Chain FORWARD (policy ACCEPT 0 packets, 0 bytes)
     pkts bytes target     prot opt in     out     source               destination
    
    Chain OUTPUT (policy ACCEPT 0 packets, 0 bytes)
     pkts bytes target     prot opt in     out     source               destination
    

    Any help is greatly appreciated.
    Thanks, all!


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