Solved Error sending activity mail

[estranged]

Issue with php 8.3 I guess...

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:296
#0 src/XF/BbCode/Renderer/Html.php(296): XF\Template\Templater->handleTemplateError(2, '[E_WARNING] Inc...', '/home/x/...', 296)
#1 src/XF/BbCode/Traverser.php(63): XF\BbCode\Renderer\Html->renderTag(Array, Array)
#2 src/XF/BbCode/Renderer/Html.php(1351): XF\BbCode\Traverser->renderSubTree(Array, Array)
#3...

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