Error : "Sorry, an error has occurred. Please clear your browser cache." (Chrome on Windows)

I have now already converted many Joomla websites to J4. Each conversion to J4 brought the error message discussed here. For a long time I was looking for a solution and now I found a workaround that always worked for me now. So I could migrate all websites to J4 practically without problems.

My last project: Update Joomla 3 to Jooma 4.3.4 with PHP 8.1
Once the J4 update was installed, I did the following steps:

If you haven't done it before the update to J4: uninstall everything related to Themler (all templates, all plugins).
Now the first important step: in the path /domain.xxx/templates/manifests delete all .manifest files, except manifest.php.

Clear the cache on the website and now the 2nd important step: In this forum in a post the Themler developers offered the Themler version v559 for download, I still have this and this version is the only one that has always worked for me. All other versions, newer or older, always brought the same error. v559 however not.

So I installed v559 and Themler started without problems. In the folder path /domain.xxx/templates/manifests the themler-559.manifest file was also created. Sometimes it was necessary for me to install the same template ZIP file again, for whatever reason.

Maybe this post will help someone of you, at least I hope so!

All the best and good luck! Greetings

Hello,

Thanks for letting us know. Additionally, there is a fresh update available with some fixes for PHP 8, so we recommend to update the theme to v.559.

Sincerely,
Nettie

2 weeks ago I face this problem on my site (bakewarely.com) and the problem was automatically fixed by installing the theme again.

Hello,

Could you please remove the old theme from the website, then clear cache and install the attached theme - it is updated to the latest Themler Beta.

Sincerely,
Nettie

Hello,

Could you please specify what Themler and PHP version you have at the moment?

Sincerely,
Nettie

Hello Kos,

This issue maybe related to theme version, it may be too old for current Joomla installation.
Could you please send us your theme as zip file in a separate private ticket?

Gina
Themler Support

Hi,

Same problem here i try to use IE, firefox and chrome. Clean the cache no results... I don't use the desktop version...

Hope you can help me out...

Last edited 13 October 2020 by kverweij

Mike,

Please try to run the URL like this in a browser - Chrome and Firefox:
http://127.0.0.1:12080/themler_XXXXXXXXXX/startup/
The numbers instead of XXXXXXXXXX are individual and can be found at the path like C:\ProgramData\Themler\hd_data\themler_xxxxxxxxx

Gina
Themler Support

How do I open and use the browser based themler version?

Can you please try this solution?

If you are using Google Chrome
1) navigate to:
chrome://appcache-internals
find your website and click on 'Remove Item'
2) navigate to:
chrome://settings/clearBrowserData
select 'Cached images and files ' and click on 'Clear Data' (please don't check other check-boxes).
3) Reload your Themler Editor.

If you are using the Desktop version
1) close Themler
2) open Windows Explorer and type %LocalAppData% in the address bar
3) find & rename Themler directory
4) start Themler again

Is this working for you?

I'm using the desktop version, what does Google Chrome have to do with this error?

No, clicked on wordpress icon; it presents the 2 untitled templates when I click on one it throws the connection error

Can you please try this solution?

If you are using Google Chrome
1) navigate to:
chrome://appcache-internals
find your website and click on 'Remove Item'
2) navigate to:
chrome://settings/clearBrowserData
select 'Cached images and files ' and click on 'Clear Data' (please don't check other check-boxes).
3) Reload your Themler Editor.

If you are using the Desktop version
1) close Themler
2) open Windows Explorer and type %LocalAppData% in the address bar
3) find & rename Themler directory
4) start Themler again

Is this working for you?

I'm using the desktop version, what does Google Chrome have to do with this error?

Answered in private ticket.

Gina
Themler Support

No that isn't working for me. What else can we do? The product hasn't been working for over a week now.

Can you please try this solution?

If you are using Google Chrome
1) navigate to:
chrome://appcache-internals
find your website and click on 'Remove Item'
2) navigate to:
chrome://settings/clearBrowserData
select 'Cached images and files ' and click on 'Clear Data' (please don't check other check-boxes).
3) Reload your Themler Editor.

If you are using the Desktop version
1) close Themler
2) open Windows Explorer and type %LocalAppData% in the address bar
3) find & rename Themler directory
4) start Themler again

Is this working for you?

Last edited 15 May 2019 by Support Team

I'm getting the issue in Firefox as well as Chrome.

https://imgur.com/a/ejQZtal

Hello,

Another possible temporary solution is to try running in Chrome secret mode - you may use it for Themler meanwhile.

Sincerely,
Nettie

I have the exact problem in all my sites on chrome, Firefox is not my favourite browser to use, I am using it till your developers fix the problem hopefully soon.

The issue with Chome is reported to the developers. While it is being fixed, please, stick to FF.

Gina
Themler Support

Could ypu please try Firefox?
Gina
Themler Support

Hello,

Yes I tried Firefox and it works fine. I simply don't understand why it doesn't work anymore on Chrome.

Thank you.

Could ypu please try Firefox?
Gina
Themler Support