error this
Code:
An exception occurred: [ErrorException] [E_DEPRECATED] hash_hmac(): Passing null to parameter #3 ($key) of type string is deprecated in src/XF/App.php on line 1418
XF::handlePhpError()
hash_hmac() in src/XF/App.php at line 1418
XF\App->XF\{closure}() in src/XF/Template/Templater.php at line 372
XF\Template\Templater->getCssValidationKey() in src/XF/Template/Templater.php at line 354
XF\Template\Templater->getCssLoadUrl() in src/XF/Mvc/Renderer/Html.php at line 95
XF\Mvc\Renderer\Html->postFilter() in src/XF/Mvc/Dispatcher.php at line 405
XF\Mvc\Dispatcher->render() in src/XF/Mvc/Dispatcher.php at line 60
XF\Mvc\Dispatcher->run() in src/XF/App.php at line 2482
XF\App->run() in src/XF.php at line 525
XF::runApp() in index.php at line 20