Template error: [E_WARNING] A non-numeric value encountered

[Nirjonadda]

I am getting Server error log after upgraded to PHP 8 from 7.4 that causes a PHP 8 incompatibility error.

Code:

ErrorException: Template error: [E_WARNING] A non-numeric value encountered internal_data/code_cache/templates/l1/s12/public/extra.less.php:99

Generated by: Unknown account Jul 17, 2021 at 12:36 AM

Stack trace

#0 internal_data/code_cache/templates/l1/s12/public/extra.less.php(99): XF\Template\Templater->handleTemplateError(2, '[E_WARNING] A n...', '/home/nadda/pub...', 99)
#1...

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Template error: [E_WARNING] A non-numeric value encountered

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