Looking for logging into the Ubuntu 16.04 Loop Gtk_is_widget Failed site and are not getting the correct working link for it? In such a case, you can use the links given here by searching your desired login page in the search box. If the page is present on our website then you will get all the links related to the Ubuntu 16.04 Loop Gtk_is_widget Failed site. After that you can login as usual with your login credentials.
https://askubuntu.com/questions/1096625/stuck-in-login-loop-ubuntu-16-04
https://ubuntuforums.org/showthread.php?t=2343617
https://bugs.launchpad.net/bugs/1289807
https://bugs.launchpad.net/bugs/+bugs?field.searchtext=&memo=261825&start=261825
https://stackoverflow.com/questions?page=17909&sort=Unanswered&pagesize=%7Bpagesize%7D
https://gist.github.com/Cheezykins/2a1a6ee80e850526b8408d92648a0305
https://sourceforge.net/p/vice-emu/mailman/vice-emu-mail/?limit=250&viewmonth=201112
https://sourceforge.net/p/vice-emu/mailman/vice-emu-mail/?limit=250&viewmonth=201110
https://redmine.darktable.org/projects/darktable/activity?from=2017-01-03
https://redmine.darktable.org/projects/darktable/activity?from=2016-12-21
http://ubuntudiff.debian.net/?query=-FPackage+libindicator
https://www.neowin.net/forum/topic/460972-copying-files-to-other-hard-drives/
https://lists.gambas-basic.org/pipermail/user/2009-January.txt