Confluence header (where you enter login credentials) missing after upgrade

Question

Upgraded from 6.15 to 7.0.2, now when I launch Confluence I get the following at the top of the page:

$soyTemplateRendererHelper.getRenderedTemplateHtml("com.atlassian.auiplugin:aui-experimental-soy-templates", "aui.page.header.soy", $templateParameters)

and can't log in because the header is missing.

UPDATE:  Was able to get this resolved.

Joe Roper · Answer

Stephen,

The problem stemmed from a missing plugin.

I just was able to find the relevant threads in the Atlassian Community pages.  Just kept digging after I entered the ticket.  The following ones were the ones that helped me:

https://confluence.atlassian.com/confkb/missing-buttons-inside-the-top-bar-with-soytemplaterendererhelper-getrenderedtemplatehtml-error-message-appears-instead-867358888.html

https://confluence.atlassian.com/confkb/how-to-manually-change-a-plugin-back-to-default-state-through-the-database-592609333.html

As you said, maybe this will help someone else who has the same problem.

Stephen Sifers · Answer

Hello Joe!

Wow, excellent work finding the cause and resolving it! To help others who may have the same issue, could you enlighten us as to what the cause of the problem was and what you did to resolve it?

Who knows? You may help someone avoid an unwarranted headache with a few simple steps on how you did it!

Regards,
Stephen Sifers