我跟随此tutorial，当我执行heroku open命令时，会收到一系列错误/警告消息（您可以在下面看到）
(venv)me:~/Desktop/django-projects/hellodjango$ heroku openOpening arcane-everglades... done
(venv)me:~/Desktop/django-projects/hellodjango$
(process:29722): GLib-CRITICAL **: g_slice_set_config: assertion 'sys_page_size == 0' failed
WARNING: content window passed to PrivateBrowsingUtils.isWindowPrivate. Use isContentWindowPrivate instead (but only for frame scripts).
pbu_isWindowPrivate@resource://gre/modules/PrivateBrowsingUtils.jsm:25:14
pbs<@resource://unity/observer.js:38:71
Observer.prototype.observe@resource://unity/observer.js:77:24
get_contentWindow@chrome://global/content/bindings/browser.xml:412:54
get_securityUI@chrome://global/content/bindings/browser.xml:662:17
browser_XBL_Constructor@chrome://global/content/bindings/browser.xml:786:17
WARNING: content window passed to PrivateBrowsingUtils.isWindowPrivate. Use isContentWindowPrivate instead (but only for frame scripts).
pbu_isWindowPrivate@resource://gre/modules/PrivateBrowsingUtils.jsm:25:14
pbs<@resource://unity/observer.js:38:71
Observer.prototype.observe@resource://unity/observer.js:77:24
WARNING: content window passed to PrivateBrowsingUtils.isWindowPrivate. Use isContentWindowPrivate instead (but only for frame scripts).
pbu_isWindowPrivate@resource://gre/modules/PrivateBrowsingUtils.jsm:25:14
pbs<@resource://unity/observer.js:38:71
Observer.prototype.observe@resource://unity/observer.js:77:24
WARNING: content window passed to PrivateBrowsingUtils.isWindowPrivate. Use isContentWindowPrivate instead (but only for frame scripts).
pbu_isWindowPrivate@resource://gre/modules/PrivateBrowsingUtils.jsm:25:14
pbs<@resource://unity/observer.js:38:71
Observer.prototype.observe@resource://unity/observer.js:77:24
有什么问题？
感谢您的帮助！
我注意到Ubuntu正在使用Firefox打开网站，我将默认浏览器更改为Chrome，并且消息（在heroku open之后）更改为：
1424792784910 addons.xpi WARN Exception running bootstrap method shutdown on webapps-team@lists.launchpad.net: ReferenceError: sss is not defined (resource://gre/modules/addons/XPIProvider.jsm -> file:///usr/share/mozilla/extensions/%7Bec8030f7-c20a-464f-9b0e-13a3a9e97384%7D/webapps-team@lists.launchpad.net/bootstrap.js:72:4) JS Stack trace: shutdown@resource://gre/modules/addons/XPIProvider.jsm -> file:///usr/share/mozilla/extensions/%7Bec8030f7-c20a-464f-9b0e-13a3a9e97384%7D/webapps-team@bootstrap.js:72:5 < XPI_callBootstrapMethod@XPIProvider.jsm:4436:9 < shutdownObserver@XPIProvider.jsm:2183:13
[Child 30003] WARNING: pipe error (3): Connection reset by peer: file /build/buildd/firefox-35.0.1+build1/ipc/chromium/src/chrome/common/ipc_channel_posix.cc, line 451