Upgraded to JIRA Software 7.5.0. JIRA Agile component is disabled. "Boards" tab is missing.

[Arman Kozhabayev]

Recently, I had an issue with JIRA Software. It was missing but I could not install new version. I solved it by upgrading JIRA to 7.5.0 version. Only after that, I managed to upgrade JIRA Software.  

However, now I don't see "Boards" tab. What I found in the logs is:

JIRA Agile : com.pyxis.greenhopper.jira
Version : 7.5.0-DAILY20170902071651
Status : disabled
Vendor : Atlassian
Description : Agile Project Management for JIRA (Build: #1655ee4b64cb1a29)

Can you please give help to get back my "Boards" tab ?!

P.S: Why am I getting this "invalid html" error ?!!

[Arman Kozhabayev · Accepted solution]

The issue is solved. JIRA Agile add-on is enabled now.

[Thisara Ukwatta]

Can you please explain how you did that...?

[Nic Brough -Adaptavist-]

Disabling and re-enabling the Software *application* (not the agile add-on) generally fixes it for most.

[Arman Kozhabayev]

I twice could not publish my question. Argued to "invalid html". Then, I added P.S part. I was expecting to get the error again but succeeded. So, this is the reason why I added P.S.