Fatal error after updating to WordPress 5

Corrupted files

If this happened during/after an update, the update may have not completed correctly. Try a manual update: https://codex.wordpress.org/Upgrading_WordPress#Manual_Update

wp-config.php

Your wp-config.php file might be empty for some reason. See: https://codex.wordpress.org/Editing_wp-config.php

Related Posts:

  1. How to fix empty dashboard issue in WordPress?
  2. Fatal error: Call to undefined function wp() in ../wp-blog-header.php?
  3. Call to undefined function nocache_headers() [closed]
  4. The famous WordPress white screen of death
  5. How do I “fix” a wp-blog-header.php error message?
  6. Blank/White Screen on Frontend but Accessible backend?
  7. PHP Fatal error: Cannot call overloaded function for non-object in wp-includes/capabilities.php [closed]
  8. current_user_can on WordPress 3.1.1
  9. WordPress White Page with Certain Database
  10. Memory issues – Fatal error: out of memory – plugins?
  11. PHP Fatal error: Call to undefined function WP_Filesystem() [closed]
  12. What does this mean: Object of class WP_Error could not be converted to string
  13. How to customize the critical error message?
  14. 500 Error only one one page in the WP admin
  15. How to make my plugin code die gracefully
  16. Fatal error…Please help me
  17. Revslider error. Impossible to enter admin dashboard [closed]
  18. Fatal error after update [closed]
  19. White screen of death after an auto update of WordPress
  20. Fatal Error after migrating WordPress site from one host to another
  21. WordPress problem with fatal error
  22. After Plugin deinstallation, Login impossible and line50 error
  23. Need help decrypting error and warning messages
  24. WordPress crashed during update
  25. Fatal error: Cannot redeclare get_header_image() (previously declared in [closed]
  26. locked out of wordpress site ‘warning: require once’
  27. Can’t access my site due to fatal error [closed]
  28. White screen after a couple hours?
  29. My site is not working because of this: Fatal error: Cannot redeclare be_themes_contact_authentication [closed]
  30. Fatal error: Uncaught Error: Call to undefined function do_action_ref_array() when using wp_signon function
  31. Allowed memory size exhausted
  32. Fatal error: Call to undefined function the_archive_title ()
  33. Fatal error: Call to undefined function reset_mbstring_encoding
  34. WP_Error with get_category_parents
  35. Fatal Error Class ‘WP_Widget_Pages’ not found in /home/****/public_html/wp-includes/class-wp-widget-factory.php
  36. Fatal error in wordpress htdocs
  37. failed to open stream – wp-includes/blocks/file.php
  38. WordPress critical error (tried plugin + debug!)
  39. Not able to access admin console after Installing and activating a plugin
  40. Fatal error: Uncaught Error: Class ‘WP_REST_Meta_Fields’ not found in
  41. Uncaught Stripe\Exception\SignatureVerificationException: Unable to extract timestamp and signatures from header
  42. unable to edit any page of my wordpress website
  43. How to remove theme that caused WordPress to crash?
  44. Fatal error: Uncaught Error: Call to undefined function twentynineteen_post_thumbnail()
  45. Php Fatal error. Blank wordpress admin panel
  46. Recoverable fatal error: Object of class WP_Error could not be converted to string in /home/xyz/mysite.com/wp-includes/formatting.php on line 3796
  47. How to fix wordpress white screen of death a cause bad php code?
  48. Catchable fatal error: Object of class WP_Error could not be converted to string in
  49. WordPress site suddenly stopped working
  50. wp search-replace inside site’s directory bring PHP fatal error
  51. WordPress Fatal Error
  52. Blank page and 301 redirect
  53. White Screen of Death error
  54. WordPress displays 500 error on PHP errors
  55. WSOD on 4.1.1 after migrating from Bluehost to Dreamhost
  56. Object of class WP_Post could not be converted to string
  57. Fatal error: Call to undefined function term_exists()
  58. Call to undefined function is_blog_installed(), after creating functions.php [closed]
  59. Parse error: syntax error, unexpected T_FUNCTION on plugins page
  60. Blank screen at login/logout – tried everything!
  61. Fatal error: Can’t use method return value in write context
  62. Fatal error: Call to undefined function request_filesystem_credentials()
  63. Fatal error: Allowed memory size of 94371840 bytes exhausted (tried to allocate 42240 bytes) in /home/dh_w7t9sk/morleywines.com/wp-content/plugins/
  64. HELP! Fatal Error? I can’t access the Dashboard. How do I regain access? [closed]
  65. Flamingo’s Fatal error: Allowed memory size of 134217728 … wp-includes/wp-db.php on line 2516 [closed]
  66. Fatal error: Uncaught Error: Call to undefined function wpcf7
  67. How to fix Fatal Error in wp-includes/meta.php after upgrade to PHP 8
  68. Call to undefined function create_function()
  69. Fatal error: Uncaught Error: Call to undefined method Elementor\Utils::is_ajax() [closed]
  70. “CRITICAL Object of class WP_Error could not be converted to string” using templates with twig
  71. WordPress core files – PHP Warning: file_exists(): open_basedir restriction in effect
  72. Fatal error: Uncaught Error: Cannot use object of type WP_Error as array
  73. Recover WordPress site from critical error?
  74. PHP Fatal error: Using $this when not in object context
  75. Using $this when not in object context in PHP
  76. C++ Fatal Error LNK1120: 1 unresolved externals
  77. PHP Notice: Undefined offset: 1 with array when reading data
  78. Weird PHP error: ‘Can’t use function return value in write context’
  79. Fatal error: Allowed memory size of 268435456 bytes exhausted (tried to allocate 71 bytes)
  80. A fatal error has been detected by the Java Runtime Environment. EXCEPTION_ACCESS_VIOLATION
  81. A fatal error has been detected by the Java Runtime Environment: SIGSEGV, libjvm
  82. How can I fix fatal RevSlider error in dashboard after upgrading to PHP 7? [closed]
  83. Activate a plugin through PHPMyAdmin or FTP?
  84. Custom post type – posts list – white screen of death
  85. Undefined offset: 0 in > […] /wp-includes/capabilities.php on line 1067
  86. WordPress database error with latest WP – “WP_termmeta doesn’t exist”
  87. White screen of death only in wp-admin
  88. Fatal error: Call to undefined function wp_mail()
  89. How to disable automated E-Mail on PHP error/exception?
  90. Fatal error: Allowed memory size of 41943040 bytes exhausted (tried to allocate 20480 bytes)
  91. WordPress plugin installation error
  92. Steps to debug on a blank screened wordpress install
  93. WordPress error – PHP Fatal error: Uncaught Error: Call to undefined function register_block_type_from_metadata()
  94. White screen error for a custom theme
  95. Fatal error: Call to undefined method stdClass::filter() in wp-includes\taxonomy.php on line 805
  96. Allowed memory size exhausted. WordPress side solution
  97. White screen of death on post save only
  98. “Maximum function nesting level of ‘100’ reached” after adding a new filter
  99. Call to undefined function get_current_screen() on my localhost
  100. wp-admin blank in a clean install of WordPress on PHP 5.4 [closed]
Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)