My Website Isn't Working After Updating WordPress

which plugins are installed?
which theme is installed?

This is the last thing displayed in your page source code:

<!--noptimize--><!-- Autoptimize found a problem with the HTML in your Theme, tag </body> missing --><!--/noptimize--><script type='text/javascript' src='https://stats.wp.com/e-201615.js' async defer></script>
<script type='text/javascript'>
	_stq = window._stq || [];
	_stq.push([ 'view', {v:'ext',j:'1:3.9.6',blog:'95157713',post:'85',tz:'8',srv:'www.winblow.ml'} ]);
	_stq.push([ 'clickTrackerInit', '95157713', '85' ]);
</script>

– For plugins, last thing i remember is Jetpack, WP Super Cache, Accesspress Anonymous Post, Social Login, wp Discuz Comment, Buddypress, kk Star Rating, WP-Optimize and that’s all.
– Theme i used now is Accesspress Magz

So, what should i do next? i can’t login to wp-admin and else. Thanks for help and reply.

do you still can’t login in Admin Panel ?

Do you have backup of Database ?

Yes, i have. But, i just reinstall my WordPress and it’s back again. But not in my main home. I think it will be different topic. Should i create new threads? i still have a problem with @bdbrown post. Thanks for help.

[Update]
Now i’m facing with this problem again. What’s wrong with my blog? I just reinstall a few hours ago and i got this problem again. Help?

Have you tried disabling all your plugins to see if that fixes it? If that doesn’t do it, leave them all disabled and try switching to a default WP theme like Twenty Fifteen and see if that fixes it.

Please Disable any CSS Minification (AUTOPTIMIZE DISABLE IT)
Disable ALL Plugins VIA SFTP (RENAME PLUGINS DIRECTORY to SOMETHING UNIQUE)
and TRY

This is Particularly a Plugin ISSUE

Unlikely to be Autoptimize, but indeed prudent a plugin issue nonetheless.

Frank (ao dev)

Thanks for help. I disable themes and back to default and work again. But, when i try to install another theme (not the same theme again), it happen again. So what’s wrong ? i can’t access wp-admin again. Same error 500. Thanks

Okay. I’ll try. Thank you very much for help.

Hi! my blog is up again and i can access wp-admin. But, still facing problem with post and category pages. Here’s a link of screenshoot. Just disable all plugin and activated Twenty Fifteen theme. Help? thanks

Finally!! My problem fix. I just downgrade to 4.2.2 and it works like a charm. I’ll closed thread soon if next a few hours i got this problem again (for making sure and not creating multiple threads). Thank you very much for helping and reply! ??