Problem/Motivation
Using PHP 8.3.1 locally for development, I am seeing the following error message whenever there is an H5P object on the page...
Deprecated function: Creation of dynamic property H5PCore::$relativePathRegExp is deprecated in H5PCore->__construct() (line 2080 of vendor\h5p\h5p-core\h5p.classes.php).
H5PCore->__construct(Object, Object, '/', 'en', 1) (Line: 59)
Drupal\h5p\H5PDrupal\H5PDrupal::getInstance() (Line: 110)
Drupal\h5p\H5PDrupal\H5PDrupal::getGenericH5PIntegrationSettings() (Line: 54)
Drupal\h5p\Plugin\Field\FieldFormatter\H5PDefaultFormatter->viewElements(Object, 'en') (Line: 91)
Drupal\Core\Field\FormatterBase->view(Object, 'en') (Line: 268)
Drupal\Core\Entity\Entity\EntityViewDisplay->buildMultiple(Array) (Line: 340)
Drupal\Core\Entity\EntityViewBuilder->buildComponents(Array, Array, Array, 'default') (Line: 282)
Drupal\Core\Entity\EntityViewBuilder->buildMultiple(Array) (Line: 18)
Drupal\paragraphs\ParagraphViewBuilder->buildMultiple(Array) (Line: 239)
Drupal\Core\Entity\EntityViewBuilder->build(Array)
call_user_func_array(Array, Array) (Line: 113)
Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 870)
Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 432)
Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 248)
Drupal\Core\Render\Renderer->render(Array) (Line: 475)
Drupal\Core\Template\TwigExtension->escapeFilter(Object, Array, 'html', NULL, 1) (Line: 68)
__TwigTemplate_a71a86ba188e0c1e5b7468b2b59a127b->doDisplay(Array, Array) (Line: 360)
Twig\Template->yield(Array) (Line: 335)
Twig\Template->render(Array) (Line: 38)
Twig\TemplateWrapper->render(Array) (Line: 33)
twig_render_template('themes/custom/bit_by_bit/templates/field.html.twig', Array) (Line: 348)
Drupal\Core\Theme\ThemeManager->render('field', Array) (Line: 491)
Drupal\Core\Render\Renderer->doRender(Array) (Line: 504)
Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 248)
Drupal\Core\Render\Renderer->render(Array) (Line: 475)
Drupal\Core\Template\TwigExtension->escapeFilter(Object, Array, 'html', NULL, 1) (Line: 112)
__TwigTemplate_3b29c2559aee0f68e2d79465d7c6c105->doDisplay(Array, Array) (Line: 360)
Twig\Template->yield(Array) (Line: 335)
Twig\Template->render(Array) (Line: 38)
Twig\TemplateWrapper->render(Array) (Line: 33)
twig_render_template('themes/custom/bit_by_bit/templates/node--level-2.html.twig', Array) (Line: 348)
Drupal\Core\Theme\ThemeManager->render('node', Array) (Line: 491)
Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 248)
Drupal\Core\Render\Renderer->render(Array) (Line: 475)
Drupal\Core\Template\TwigExtension->escapeFilter(Object, Array, 'html', NULL, 1) (Line: 68)
__TwigTemplate_a71a86ba188e0c1e5b7468b2b59a127b->doDisplay(Array, Array) (Line: 360)
Twig\Template->yield(Array) (Line: 335)
Twig\Template->render(Array) (Line: 38)
Twig\TemplateWrapper->render(Array) (Line: 33)
twig_render_template('themes/custom/bit_by_bit/templates/field.html.twig', Array) (Line: 348)
Drupal\Core\Theme\ThemeManager->render('field', Array) (Line: 491)
Drupal\Core\Render\Renderer->doRender(Array) (Line: 504)
Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 248)
Drupal\Core\Render\Renderer->render(Array) (Line: 475)
Drupal\Core\Template\TwigExtension->escapeFilter(Object, Array, 'html', NULL, 1) (Line: 74)
__TwigTemplate_a25a3d0d22f41b68420f3b65084cd59b->block_content(Array, Array) (Line: 430)
Twig\Template->yieldBlock('content', Array, Array) (Line: 61)
__TwigTemplate_a25a3d0d22f41b68420f3b65084cd59b->block_paragraph(Array, Array) (Line: 430)
Twig\Template->yieldBlock('paragraph', Array, Array) (Line: 47)
__TwigTemplate_a25a3d0d22f41b68420f3b65084cd59b->doDisplay(Array, Array) (Line: 360)
Twig\Template->yield(Array) (Line: 335)
Twig\Template->render(Array) (Line: 38)
Twig\TemplateWrapper->render(Array) (Line: 33)
twig_render_template('modules/contrib/paragraphs/templates/paragraph.html.twig', Array) (Line: 348)
Drupal\Core\Theme\ThemeManager->render('paragraph', Array) (Line: 491)
Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 248)
Drupal\Core\Render\Renderer->render(Array) (Line: 475)
Drupal\Core\Template\TwigExtension->escapeFilter(Object, Array, 'html', NULL, 1) (Line: 68)
__TwigTemplate_a71a86ba188e0c1e5b7468b2b59a127b->doDisplay(Array, Array) (Line: 360)
Twig\Template->yield(Array) (Line: 335)
Twig\Template->render(Array) (Line: 38)
Twig\TemplateWrapper->render(Array) (Line: 33)
twig_render_template('themes/custom/bit_by_bit/templates/field.html.twig', Array) (Line: 348)
Drupal\Core\Theme\ThemeManager->render('field', Array) (Line: 491)
Drupal\Core\Render\Renderer->doRender(Array) (Line: 504)
Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 248)
Drupal\Core\Render\Renderer->render(Array) (Line: 475)
Drupal\Core\Template\TwigExtension->escapeFilter(Object, Array, 'html', NULL, 1) (Line: 74)
__TwigTemplate_a25a3d0d22f41b68420f3b65084cd59b->block_content(Array, Array) (Line: 430)
Twig\Template->yieldBlock('content', Array, Array) (Line: 61)
__TwigTemplate_a25a3d0d22f41b68420f3b65084cd59b->block_paragraph(Array, Array) (Line: 430)
Twig\Template->yieldBlock('paragraph', Array, Array) (Line: 47)
__TwigTemplate_a25a3d0d22f41b68420f3b65084cd59b->doDisplay(Array, Array) (Line: 360)
Twig\Template->yield(Array) (Line: 335)
Twig\Template->render(Array) (Line: 38)
Twig\TemplateWrapper->render(Array) (Line: 33)
twig_render_template('modules/contrib/paragraphs/templates/paragraph.html.twig', Array) (Line: 348)
Drupal\Core\Theme\ThemeManager->render('paragraph', Array) (Line: 491)
Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 248)
Drupal\Core\Render\Renderer->render(Array) (Line: 475)
Drupal\Core\Template\TwigExtension->escapeFilter(Object, Array, 'html', NULL, 1) (Line: 68)
__TwigTemplate_a71a86ba188e0c1e5b7468b2b59a127b->doDisplay(Array, Array) (Line: 360)
Twig\Template->yield(Array) (Line: 335)
Twig\Template->render(Array) (Line: 38)
Twig\TemplateWrapper->render(Array) (Line: 33)
twig_render_template('themes/custom/bit_by_bit/templates/field.html.twig', Array) (Line: 348)
Drupal\Core\Theme\ThemeManager->render('field', Array) (Line: 491)
Drupal\Core\Render\Renderer->doRender(Array) (Line: 504)
Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 248)
Drupal\Core\Render\Renderer->render(Array) (Line: 475)
Drupal\Core\Template\TwigExtension->escapeFilter(Object, Array, 'html', NULL, 1) (Line: 111)
__TwigTemplate_1809e20b4abfbe1b2c3405b03d5e71a2->doDisplay(Array, Array) (Line: 360)
Twig\Template->yield(Array) (Line: 335)
Twig\Template->render(Array) (Line: 38)
Twig\TemplateWrapper->render(Array) (Line: 33)
twig_render_template('themes/contrib/bootstrap5/templates/content/node.html.twig', Array) (Line: 348)
Drupal\Core\Theme\ThemeManager->render('node', Array) (Line: 491)
Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 248)
Drupal\Core\Render\Renderer->render(Array, ) (Line: 238)
Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 638)
Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 231)
Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object, Object) (Line: 128)
Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object, Object) (Line: 90)
Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object, 'kernel.view', Object)
call_user_func(Array, Object, 'kernel.view', Object) (Line: 111)
Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object, 'kernel.view') (Line: 186)
Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 76)
Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 53)
Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 28)
Drupal\Core\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 32)
Drupal\big_pipe\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 106)
Drupal\page_cache\StackMiddleware\PageCache->pass(Object, 1, 1) (Line: 85)
Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 270)
Drupal\shield\ShieldMiddleware->bypass(Object, 1, 1) (Line: 137)
Drupal\shield\ShieldMiddleware->handle(Object, 1, 1) (Line: 48)
Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 36)
Drupal\Core\StackMiddleware\AjaxPageState->handle(Object, 1, 1) (Line: 51)
Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object, 1, 1) (Line: 741)
Drupal\Core\DrupalKernel->handle(Object) (Line: 19)
My system
Drupal 10.3.0
Apache/2.4.33 (Win64) OpenSSL/1.0.2u mod_fcgid/2.3.9 PHP/8.3.1
PHP 8.3.1, memory limit: 256M
MySQL 5.7.24
PHP Caching module: OpCache
Front end theme
A custom subtheme Bootstrap5 (Bootstrap5 3.0.10)