Trying to installing (or switching on) Applications Menu by fmuellner results in "ERROR"
Using Firefox with installed extension-extension. Other extensions works well (mostly). As there is no usable error info given anywhere what so ever in this god forsaken webabb installation-"system" that's pretty much all the info I have. (Sorry, but I mean - seriously?)
Nothing in logs (which you should really tell users how to check when a plugin installation fails instead of simply saying "ERROR#) seems relevant:
$ journalctl /usr/bin/gnome-shell -f
-- Logs begin at Mon 2018-03-26 23:18:02 CEST. --
mars 27 20:45:39 boks-lin org.gnome.Shell.desktop[3314]: #4 0x7fff96ea3320 b resource:///org/gnome/gjs/modules/tweener/tweener.js:332 (0x7fcae46d29a0 @ 1626)
mars 27 20:45:39 boks-lin org.gnome.Shell.desktop[3314]: #5 0x7fff96ea33d0 b resource:///org/gnome/gjs/modules/tweener/tweener.js:345 (0x7fcae46d2a28 @ 100)
mars 27 20:45:39 boks-lin org.gnome.Shell.desktop[3314]: #6 0x7fff96ea3460 b resource:///org/gnome/gjs/modules/tweener/tweener.js:360 (0x7fcae46d2ab0 @ 10)
mars 27 20:45:39 boks-lin org.gnome.Shell.desktop[3314]: #7 0x7fff96ea34e0 I resource:///org/gnome/gjs/modules/signals.js:126 (0x7fcae46cff78 @ 386)
mars 27 20:45:39 boks-lin org.gnome.Shell.desktop[3314]: #8 0x7fff96ea3590 b resource:///org/gnome/shell/ui/tweener.js:207 (0x7fcae46cf5e8 @ 159)
mars 27 20:45:39 boks-lin org.gnome.Shell.desktop[3314]: #9 0x7fff96ea3600 I resource:///org/gnome/gjs/modules/_legacy.js:82 (0x7fcae46b4de0 @ 71)
mars 27 20:45:39 boks-lin org.gnome.Shell.desktop[3314]: #10 0x7fff96ea3600 I resource:///org/gnome/shell/ui/tweener.js:182 (0x7fcae46cf560 @ 15)
mars 27 20:46:04 boks-lin gnome-shell[3314]: Received error from DBus search provider org.gnome.Documents.desktop during GetResultMetas: Gio.IOErrorEnum: Timeout was reached
mars 27 20:46:04 boks-lin gnome-shell[3314]: Wrong number of result metas returned by search provider org.gnome.Documents.desktop: expected 1 but got 0
mars 27 20:46:04 boks-lin gnome-shell[3314]: Received error from DBus search provider org.gnome.Epiphany.desktop: Gio.IOErrorEnum: Timeout was reached
gnome-shell version 3.28.0-1
Another suggestion while I'm at it: Some sort of documentation and error solving guide.