After enabling the Tracker, displaying a node (e.g. an article-node) results in the fatal error (nesting level) shown below. Tested with the most current D8.x-dev version from today!

Fatal error: Maximum function nesting level of '100' reached, aborting! in drupal8/core/lib/Drupal/Core/Database/Query/Query.php on line 126 Call Stack: 0.0001 329644 1. {main}() drupal8/index.php:0 0.0089 509092 2. drupal_handle_request() drupal8/index.php:15 0.2484 2363872 3. Drupal\Core\DrupalKernel->handle() drupal8/core/includes/bootstrap.inc:1886 0.2530 2425708 4. Drupal\Core\HttpKernel->handle() drupal8/core/lib/Drupal/Core/DrupalKernel.php:282 0.2534 2426516 5. Symfony\Component\HttpKernel\HttpKernel->handle() drupal8/core/lib/Drupal/Core/HttpKernel.php:52 0.2539 2426516 6. Symfony\Component\HttpKernel\HttpKernel->handleRaw() drupal8/core/vendor/symfony/http-kernel/Symfony/Component/HttpKernel/HttpKernel.php:61 2.9673 8193352 7. call_user_func_array() drupal8/core/vendor/symfony/http-kernel/Symfony/Component/HttpKernel/HttpKernel.php:117 2.9673 8193668 8. Drupal\Core\Controller\HtmlPageController->content() drupal8/core/vendor/symfony/http-kernel/Symfony/Component/HttpKernel/HttpKernel.php:0 4.1527 10047032 9. drupal_render_page() drupal8/core/lib/Drupal/Core/Controller/HtmlPageController.php:100 4.7334 12742256 10. drupal_render() drupal8/core/includes/common.inc:3634 4.7336 12744460 11. theme() drupal8/core/includes/common.inc:3842 6.7644 19385252 12. twig_render_template() drupal8/core/includes/theme.inc:737 7.1845 22889204 13. Twig_Template->render() drupal8/core/themes/engines/twig/twig.engine:54 7.1845 22930648 14. Twig_Template->display() drupal8/core/vendor/twig/twig/lib/Twig/Template.php:249 7.1846 22930976 15. Twig_Template->displayWithErrorHandling() drupal8/core/vendor/twig/twig/lib/Twig/Template.php:238 7.1846 22930976 16. __TwigTemplate_48e40678b5eb34eeec2544a5b3afdf6d->doDisplay() drupal8/core/vendor/twig/twig/lib/Twig/Template.php:264 7.2543 23156168 17. twig_render_var() drupal8/sites/blooniverse.com/files/php/twig/1#48#e4#0678b5eb34eeec2544a5b3afdf6d.php/2f3a09773a63829323ea75bc51fc42f06b45092a90d43f4f5d74ac6365bd49d9.php:272 7.2543 23156168 18. render() drupal8/core/themes/engines/twig/twig.engine:130 7.2543 23156280 19. drupal_render() drupal8/core/includes/common.inc:3999 7.2544 23157380 20. drupal_render() drupal8/core/includes/common.inc:3855 7.2544 23158456 21. theme() drupal8/core/includes/common.inc:3842 7.2553 23165928 22. twig_render_template() drupal8/core/includes/theme.inc:737 7.2554 23168136 23. Twig_Template->render() drupal8/core/themes/engines/twig/twig.engine:54 7.2554 23209288 24. Twig_Template->display() drupal8/core/vendor/twig/twig/lib/Twig/Template.php:249 7.2555 23209452 25. Twig_Template->displayWithErrorHandling() drupal8/core/vendor/twig/twig/lib/Twig/Template.php:238 7.2555 23209452 26. __TwigTemplate_311d19b6c9dc643bb9707c55f1656b1d->doDisplay() drupal8/core/vendor/twig/twig/lib/Twig/Template.php:264 7.2557 23212292 27. twig_render_var() drupal8/sites/blooniverse.com/files/php/twig/1#31#1d#19b6c9dc643bb9707c55f1656b1d.php/01014051e3768a37cfbbab0e36ad9dc7800953165cb9dbb43ade685c73588fd7.php:49 7.2558 23212292 28. render() drupal8/core/themes/engines/twig/twig.engine:130 7.2558 23212404 29. drupal_render() drupal8/core/includes/common.inc:3999 7.2558 23213320 30. drupal_render() drupal8/core/includes/common.inc:3855 7.2559 23215076 31. drupal_render() drupal8/core/includes/common.inc:3855 7.2561 23217388 32. theme() drupal8/core/includes/common.inc:3842 7.6559 23716384 33. twig_render_template() drupal8/core/includes/theme.inc:737 7.8013 23500488 34. Twig_Template->render() drupal8/core/themes/engines/twig/twig.engine:54 7.8014 23541640 35. Twig_Template->display() drupal8/core/vendor/twig/twig/lib/Twig/Template.php:249 7.8014 23541804 36. Twig_Template->displayWithErrorHandling() drupal8/core/vendor/twig/twig/lib/Twig/Template.php:238 7.8014 23541804 37. __TwigTemplate_f682df03dd2d2492f46f9b4b1dd648f0->doDisplay() drupal8/core/vendor/twig/twig/lib/Twig/Template.php:264 7.8713 23576884 38. twig_render_var() drupal8/sites/blooniverse.com/files/php/twig/1#f6#82#df03dd2d2492f46f9b4b1dd648f0.php/460b60616fe66ad435ad2d37d204df4c310ad8aa7ff96e557244540e7344cd52.php:84 7.8714 23576884 39. render() drupal8/core/themes/engines/twig/twig.engine:130 7.8714 23576996 40. drupal_render() drupal8/core/includes/common.inc:3999 7.8760 23583888 41. drupal_render() drupal8/core/includes/common.inc:3855 7.8763 23585924 42. theme() drupal8/core/includes/common.inc:3842 7.8781 23594084 43. theme_field() drupal8/core/includes/theme.inc:671 7.8781 23594880 44. drupal_render() drupal8/core/modules/field/field.module:682 7.8783 23596148 45. theme() drupal8/core/includes/common.inc:3842 7.8825 23602604 46. twig_render_template() drupal8/core/includes/theme.inc:737 7.9736 23692784 47. Twig_Template->render() drupal8/core/themes/engines/twig/twig.engine:54 7.9736 23733936 48. Twig_Template->display() drupal8/core/vendor/twig/twig/lib/Twig/Template.php:249 7.9736 23734100 49. Twig_Template->displayWithErrorHandling() drupal8/core/vendor/twig/twig/lib/Twig/Template.php:238 7.9737 23734100 50. __TwigTemplate_c89e729e433357a599e190c8ada26991->doDisplay() drupal8/core/vendor/twig/twig/lib/Twig/Template.php:264 7.9785 23738576 51. twig_render_var() drupal8/sites/blooniverse.com/files/php/twig/1#c8#9e#729e433357a599e190c8ada26991.php/c15300c1d81bd08df85d587652889c9283a9fa82fed65207a7545a98c63e608e.php:58 7.9786 23738576 52. render() drupal8/core/themes/engines/twig/twig.engine:130 7.9786 23738688 53. drupal_render() drupal8/core/includes/common.inc:3999 7.9789 23740508 54. _drupal_render_process_post_render_cache() drupal8/core/includes/common.inc:3944 7.9789 23742340 55. call_user_func_array() drupal8/core/includes/common.inc:4234 7.9790 23742368 56. Drupal\comment\Plugin\Field\FieldFormatter\CommentDefaultFormatter::renderForm() drupal8/core/includes/common.inc:0 7.9795 23742412 57. comment_add() drupal8/core/modules/comment/lib/Drupal/comment/Plugin/Field/FieldFormatter/CommentDefaultFormatter.php:197 8.1416 24100540 58. Drupal\Core\Entity\EntityManager->getForm() drupal8/core/modules/comment/comment.module:588 8.1460 24429036 59. drupal_build_form() drupal8/core/lib/Drupal/Core/Entity/EntityManager.php:295 8.1461 24429036 60. Drupal\Core\Form\FormBuilder->buildForm() drupal8/core/includes/form.inc:121 8.1461 24431464 61. Drupal\Core\Form\FormBuilder->retrieveForm() drupal8/core/lib/Drupal/Core/Form/FormBuilder.php:231 8.1465 24433376 62. call_user_func_array() drupal8/core/lib/Drupal/Core/Form/FormBuilder.php:556 8.1465 24433692 63. Drupal\Core\Entity\EntityFormController->buildForm() drupal8/core/lib/Drupal/Core/Form/FormBuilder.php:0 8.1764 24521048 64. Drupal\comment\CommentFormController->form() drupal8/core/lib/Drupal/Core/Entity/EntityFormController.php:96 8.2125 24579788 65. Drupal\Core\Entity\ContentEntityFormController->form() drupal8/core/modules/comment/lib/Drupal/comment/CommentFormController.php:225 8.2127 24580936 66. field_attach_form() drupal8/core/lib/Drupal/Core/Entity/ContentEntityFormController.php:55 8.2127 24581948 67. field_invoke_method() drupal8/core/modules/field/field.deprecated.inc:553 8.2941 24644928 68. call_user_func() drupal8/core/modules/field/field.attach.inc:96 8.2941 24644956 69. {closure}() drupal8/core/modules/field/field.attach.inc:0 8.2942 24644956 70. Drupal\entity\Entity\EntityFormDisplay->getRenderer() drupal8/core/modules/field/field.attach.inc:262 8.3104 24700064 71. Drupal\Core\Field\WidgetPluginManager->getInstance() drupal8/core/modules/entity/lib/Drupal/entity/Entity/EntityFormDisplay.php:59 8.3104 24700520 72. Drupal\Core\Plugin\DefaultPluginManager->getDefinition() drupal8/core/lib/Drupal/Core/Field/WidgetPluginManager.php:102 8.3105 24700520 73. Drupal\Core\Plugin\DefaultPluginManager->getDefinitions() drupal8/core/lib/Drupal/Core/Plugin/DefaultPluginManager.php:159 8.3116 24700520 74. Drupal\Core\Plugin\DefaultPluginManager->findDefinitions() drupal8/core/lib/Drupal/Core/Plugin/DefaultPluginManager.php:174 8.3116 24700520 75. Drupal\Component\Plugin\Discovery\DerivativeDiscoveryDecorator->getDefinitions() drupal8/core/lib/Drupal/Core/Plugin/DefaultPluginManager.php:237 8.3116 24700520 76. Drupal\Core\Plugin\Discovery\AnnotatedClassDiscovery->getDefinitions() drupal8/core/lib/Drupal/Component/Plugin/Discovery/DerivativeDiscoveryDecorator.php:64 8.3117 24700520 77. Drupal\Component\Annotation\Plugin\Discovery\AnnotatedClassDiscovery->getDefinitions() drupal8/core/lib/Drupal/Core/Plugin/Discovery/AnnotatedClassDiscovery.php:75 8.3128 24737392 78. Doctrine\Common\Annotations\SimpleAnnotationReader->getClassAnnotation() drupal8/core/lib/Drupal/Component/Annotation/Plugin/Discovery/AnnotatedClassDiscovery.php:118 8.3128 24737392 79. Doctrine\Common\Annotations\SimpleAnnotationReader->getClassAnnotations() drupal8/core/vendor/doctrine/annotations/lib/Doctrine/Common/Annotations/SimpleAnnotationReader.php:112 8.3142 24739176 80. Doctrine\Common\Annotations\DocParser->parse() drupal8/core/vendor/doctrine/annotations/lib/Doctrine/Common/Annotations/SimpleAnnotationReader.php:72 8.3149 24751736 81. Doctrine\Common\Annotations\DocParser->Annotations() drupal8/core/vendor/doctrine/annotations/lib/Doctrine/Common/Annotations/DocParser.php:316 8.3149 24751944 82. Doctrine\Common\Annotations\DocParser->Annotation() drupal8/core/vendor/doctrine/annotations/lib/Doctrine/Common/Annotations/DocParser.php:574 8.3167 24760532 83. Doctrine\Common\Annotations\DocParser->MethodCall() drupal8/core/vendor/doctrine/annotations/lib/Doctrine/Common/Annotations/DocParser.php:674 8.3168 24760696 84. Doctrine\Common\Annotations\DocParser->Values() drupal8/core/vendor/doctrine/annotations/lib/Doctrine/Common/Annotations/DocParser.php:763 8.3171 24761252 85. Doctrine\Common\Annotations\DocParser->Value() drupal8/core/vendor/doctrine/annotations/lib/Doctrine/Common/Annotations/DocParser.php:797 8.3171 24761252 86. Doctrine\Common\Annotations\DocParser->FieldAssignment() drupal8/core/vendor/doctrine/annotations/lib/Doctrine/Common/Annotations/DocParser.php:920 8.3172 24761880 87. Doctrine\Common\Annotations\DocParser->PlainValue() drupal8/core/vendor/doctrine/annotations/lib/Doctrine/Common/Annotations/DocParser.php:990 8.3172 24761880 88. Doctrine\Common\Annotations\DocParser->Annotation() drupal8/core/vendor/doctrine/annotations/lib/Doctrine/Common/Annotations/DocParser.php:938 8.3178 24762988 89. Drupal\Core\Annotation\Translation->__construct() drupal8/core/vendor/doctrine/annotations/lib/Doctrine/Common/Annotations/DocParser.php:724 8.3179 24763316 90. t() drupal8/core/lib/Drupal/Core/Annotation/Translation.php:76 8.3179 24763316 91. Drupal\Core\StringTranslation\TranslationManager->translate() drupal8/core/includes/bootstrap.inc:1363 8.3180 24763688 92. Drupal\Core\StringTranslation\TranslationManager->getStringTranslation() drupal8/core/lib/Drupal/Core/StringTranslation/TranslationManager.php:118 8.3180 24763732 93. Drupal\locale\LocaleTranslation->getStringTranslation() drupal8/core/lib/Drupal/Core/StringTranslation/TranslationManager.php:98 8.3181 24763776 94. Drupal\Core\Cache\CacheCollector->get() drupal8/core/modules/locale/lib/Drupal/locale/LocaleTranslation.php:98 8.3182 24763776 95. Drupal\locale\LocaleLookup->resolveCacheMiss() drupal8/core/lib/Drupal/Core/Cache/CacheCollector.php:141 8.3182 24764144 96. Drupal\locale\StringDatabaseStorage->findTranslation() drupal8/core/modules/locale/lib/Drupal/locale/LocaleLookup.php:90 8.3182 24764424 97. Drupal\locale\StringDatabaseStorage->dbStringSelect() drupal8/core/modules/locale/lib/Drupal/locale/StringDatabaseStorage.php:80 8.3182 24764580 98. Drupal\Core\Database\Connection->select() drupal8/core/modules/locale/lib/Drupal/locale/StringDatabaseStorage.php:358 8.3182 24766264 99. Drupal\Core\Database\Query\Select->__construct() drupal8/core/lib/Drupal/Core/Database/Connection.php:670

Comments

tim.plunkett’s picture

tim.plunkett
he/him
Primary language English
Location Philadelphia
commented
Priority: Major » Normal
Status: Active » Postponed (maintainer needs more info)

I cannot reproduce. Can you provide step by step instructions?

Blooniverse’s picture

Blooniverse commented

Tim, the error happens straight after enabling the module. But -- as I have found out in the meantime -- not only after enabling this particular module.
It happens too after changing a node type and wanting to display an old/existing content of this [changed] node type. E.g. this was the case after deleting a taxonomy reference field and adding a new one. My intuition is telling me, vaguely, that this has something to do with content translation, since I've had a lot of errors in the last days in relation to it.

tim.plunkett’s picture

tim.plunkett
he/him
Primary language English
Location Philadelphia
commented

You didn't mention content_translation before.
Without step-by-step instructions, starting with a fresh install, this will be impossible to reproduce.

Blooniverse’s picture

Blooniverse commented

Aye, it is a very rudimentary issue explanation, I admit.

Well, in the meantime I get the error as well after flushing the caches (all). Let me perform some tests with a fresh D8 installation, maybe I can narrow down or even identify the cause of this nasty, nasty, nasty thing.

Blooniverse’s picture

Blooniverse commented

Okäy: I've tested all imaginable possibilities with a new D8 installation, but I couldn't reproduce the error either! However, as soon as I translate a field the horrors start in uncountable ways (various errors, complete site crash).

I am quite sure that this error is actually one of the component Language System, but I cannot directly proof it yet.

Blooniverse’s picture

Blooniverse commented
Issue tags: +language-config

Tagging with language-config.

larowlan’s picture

larowlan
Location 🇦🇺🏝.au GMT+10
commented

I don't see a repeating pattern in that trace can you disable xdebug and see if the page renders fine. If it does, you need to update your xdebug settings

Blooniverse’s picture

Blooniverse commented
Title: After enabling the Tracker, displaying a node results in fatal error (nesting level) » Fatal error (maximum nesting level of '100' reached): After flushing caches or enabling tracker.module

Changing the title.
Still get the error. Will provide more in-depth insight from testing later.

berdir’s picture

berdir
Primary language German
Location Switzerland
commented

This is a xdebug specific setting, which defaults to 100. This can be too low, also on big 7.x sites. I don't think there's anything we can do.

jhedstrom’s picture

jhedstrom
Primary language English
Location Portland, OR
commented

I've been seeing this a lot on osx. Usually an apache restart fixes it. Bumping the xdebug nesting level to 200 definitely fixes it. In xdebug.ini:

[xdebug]
xdebug.max_nesting_level=200
elijah lynn’s picture

elijah lynn
Location Portland, Oregon
commented
Related issues: +#2393531: Maximum function nesting level of '100' reached
sutharsan’s picture

sutharsan commented

I ran into this with a clean install (standard install profile) when adding a node (/node/add/article).
I can confirm Berdir's (#9) and jhedstrom's (#10) comments that it is due to an xdebug setting. Raising 'xdebug.max_nesting_level ' to 250 and restarting apache fixed it for me.

sutharsan’s picture

sutharsan commented
Status: Postponed (maintainer needs more info) » Closed (works as designed)

I take the liberty to close the issue, as the solutions all point in the same direction.
@the_phi, if you feel this issue is not closed to you, feel free to re-open.

Mark_L6n’s picture

Mark_L6n commented

Thanks for the info. I corrected this using the .htaccess file. In the section:

# PHP 5, Apache 1 and 2.
<IfModule mod_php5.c>
   ....
   ....
</IfModule>

add:
php_value xdebug.max_nesting_level 200