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Error displaying the error page: Could not find template "isis".: Class 'JAdministratorHelper' not found

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I loaded the lightbox_quickstart_j3 to a subdomain on my site. I can access the Administrator functions, but when I try to go to the main site, I get the error "Error displaying the error page: Could not find template "isis".: Class 'JAdministratorHelper' not found". How do I fix this error?

(This might be an easy fix for those who know Joomla well, but I am relatively new to the Joomla world.)

Thanks.

4 Answers

Toufiq - Staff

More than a month ago #Permalink
Hi,

Thanks for your query. Please make sure your lightbox template is default.

1. Login your joomla administrator
2. Extension > template > lightbox > set default

-Thanks

Kim Bare

More than a month ago #Permalink
Hello Toufiq,

Lightbox is set as the default and has been all along. I am still getting that error. Please note that the error is about Isis,the administrator template, not the site template.

Kim Bare

More than a month ago #Permalink
Also, it doesn't matter if I change administrator templates, I still get the same error message when I try to go to the main website.

Toufiq - Staff

More than a month ago #Permalink
Also, it doesn't matter if I change administrator templates, I still get the same error message when I try to go to the main website.


Hi, Send me your joomla administrator login info via pm. Let me check. Thanks


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