As usual Brogan, their reply is out of my pay range. Here is what they had to say:
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Greetings,
In the cPanel account for nwircforum.com under Metrics > Errors, there are a few notices being recorded, however those don't appear to be the reason the site is posting weird.
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2021-02-01 14:24:48.337617 [NOTICE] [28772] [/home/ice/public_html/.htaccess:9] Unsupported ErrorDocument URL: default, must start with '/' or 'http'.
2021-02-01 14:24:48.337596 [NOTICE] [28772] [/home/ice/public_html/.htaccess:8] Unsupported ErrorDocument URL: default, must start with '/' or 'http'.
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We did enable debugging for the site inside of /src/config.php and an error is now showing when visiting
http://nwircforum.com/css.php?css=p...32&k=4da7fed7a866e75f300abfc6772e79f8485cfdfe.
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An exception occurred: [Error] Class 'Less_Tree_Mixin_Definition' not found in src/vendor/oyejorge/less.php/lib/Less/Parser.php on line 2736
1. Less_Parser->NewObj5() in src/vendor/oyejorge/less.php/lib/Less/Parser.php at line 1727
2. Less_Parser->parseMixinDefinition() in src/vendor/oyejorge/less.php/lib/Less/Parser.php at line 858
3. Less_Parser->MatchFuncs() in src/vendor/oyejorge/less.php/lib/Less/Parser.php at line 1009
4. Less_Parser->parsePrimary() in src/vendor/oyejorge/less.php/lib/Less/Parser.php at line 674
5. Less_Parser->GetRules() in src/vendor/oyejorge/less.php/lib/Less/Parser.php at line 621
6. Less_Parser->_parse() in src/vendor/oyejorge/less.php/lib/Less/Parser.php at line 449
7. Less_Parser->parse() in src/XF/CssRenderer.php at line 412
8. XF\CssRenderer->renderToCss() in src/XF/CssRenderer.php at line 350
9. XF\CssRenderer->renderTemplate() in src/XF/CssRenderer.php at line 258
10. XF\CssRenderer->renderTemplates() in src/XF/CssRenderer.php at line 116
11. XF\CssRenderer->render() in src/XF/CssWriter.php at line 53
12. XF\CssWriter->run() in css.php at line 30
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We recommend double checking the installation procedure to make sure everything was done properly. This looks like a PHP class error that related to the logic of the site or perhaps missing files/custom plugins/themes.
As for the SSL, AutoSSL has been run for the site and there is now a SSL certificate on the domain that does not expire till May 2, 2021. This was done in the cPanel account under Security > SSL/TLS Status > Run AutoSSL.
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Use our fast SSL Checker will help you troubleshoot common SSL Certificate installation problems on your server including verifying that the correct certificate is installed, valid, and properly trusted.
www.sslshopper.com
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I look forward to any suggestions you may have (including a fresh install if necessary). I have another Xenforo running on this hosting account quite well so I don't think it's the server/host.
Thanks,
-John