Perhaps you can update your correct site backend and FTP access at your first post so we can better have a check?

May i know which page you trying to login on your site?

Fixed so sorry.

No problem Richard.

wanted to add this,
I use the normal page in the backend. You click on any other, say articles, and it logs you out then you have to log back in and it gives
you the security token mismatch.same with front end.

Hey there,

I am really sorry for the delay of this reply as it is a weekend for us here.

Actually this error is not caused by our component and currently i have no ideas why it keep logout when you click any link from backend, may i know do you have install any cache module on your server? e.g. mod_pagespeed?

If yes, can you try temporary disable it and see how it goes?

yes I do have mod_pagespeed enabled. I had to set it up so it was disabled for the backend. Weird how this is causing all sorts of issues with Joomla. It is nice to have.

Yes, this is very strange issue and we never encounter this issue before, those user who hitting this issue most likely on the frontend instead of backend.

What i trying to suggest you to temporary turn off mod_pagespeed, i just want to get rid of some of the possibilities which cause this issue, perhaps you can give it a try and see how it goes.

Make sure you have clear your server and browser cache before you test it again if you turn off mod_pagespeed on your server temporary.

By the way, i realised when i access your backend page, it always load these CSS and JS file with this kind of domain (ultimate-meadow-70.app.baqend.com).

For example :
[gist type="php"]
https://ultimate-meadow-70.app.baqend.com/v1/asset/https://www.singlesspark.org/components/com_jce/editor/tiny_mce/plugins/autolink/editor_plugin.js?50c95324e376b6c9a65a9d86cdfcc4af=1&7b00148dbc12caea4ae3866eb59daffa=&context=22
[/gist]

Do you know what is this for?

ok pagespeed is turned on. baqend is here: https://www.baqend.com VERY nice speed kit. Never had a problem with it before this.
Now that I REALLY think about it, I have not had this problem till Joomla 3.9.1

Question. I am seeing lots of folks are now having a issue with the page cache plugin now. Should we keep that turned off or no?

Currently i have really no ideas why this issue only happen on your site, but you can try clone your current live site to another test site then test it uninstall/disable something from the server or setting and see whether can figure out which caused this issue.

Question. I am seeing lots of folks are now having a issue with the page cache plugin now. Should we keep that turned off or no?

Actually it depend on what is the purpose of you to enable cache on the site, if you just want to cache the HTML content in order to load very fast, you can enable this plugin.

But if your site page content update very frequency, I would suggest you to turn it off, change to use those tool which can help the site optimise the page speed like what you have done for the mod_pagespeed.

well do. At this point I might even start from fresh and see what happens.

Keep us update if you need any assistance in the future.

I have same error logging in from front end after updating to latest Joomla 3.9.1. (I do not use PageSpeed and I'm using EasyBlog 5.2.10) "Warning: The security token did not match. The request was aborted to prevent any security breach. Please try again."

It did this several times in Chrome. Then I opened in Firefox (as there would be no cache) same issue. I then opened in Incognito and it had the same issue the first time, tried it a second time then it logged in. However, when I'm attempting to create a new post I can not add a "Post Cover" and if I click on "Fields" or "SEO' tab it will not open. Categories also do not display and Tags do not work. I've tried this from two different computers at different locations now.

Any ideas?

Hey Jeff,

Perhaps you can start a new thread on our forum page and provide us with your following details so we can better have a check.

- Joomla backend access
- FTP access