Increment on type bool has no effect

Seems like pretty much every page request is generating this error. I saw another thread about it, but in that thread it said it was fixed, so starting a new one.

Code:

ErrorException: Template error: [E_WARNING] Increment on type bool has no effect, this will change in the next major version of PHP src/XF/BbCode/Renderer/Html.php:327

Code:

Stack trace
#0 src/XF/BbCode/Renderer/Html.php(327): XF\Template\Templater->handleTemplateError(2, '[E_WARNING] Inc...', '/home/pointsixt...', 327)
#1...

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