404 error when calling php

Please try 

<form method="post" action="<?php echo get_template_directory_uri() ?>/abc.php">

I am assuming that abc.php is located in theme folder.

Related Posts:

  1. WordPress Migration: Getting 404 Errors: Only Home Page works
  2. External page integrated into WordPress returns a 404 error
  3. WordPress Theme’s 404.php not found, server defaults to Apache’s own 404 page
  4. get_the_ID() gives notice in 404 page
  5. How to open the 404 page in the Theme Customizer preview?
  6. Feed 404 Errors
  7. 404 when fetching image from wp-content/uploads/
  8. REST API: No route was found matching the URL and request method
  9. WordPress REST API 404
  10. Changing Site Address (URL) causes 404
  11. Detect 404 before headers are sent
  12. In wordpress I am manipulation 404 response. I want to give the response before 404 error is given to google
  13. 404 error on homepage when using Nginx proxying to Apache
  14. Non “WordPress” pages/code getting 404 error
  15. 404 error on all pages but homepage
  16. Where is the best part to hijack or catch a potential 404
  17. page not found in Chrome, but found in Firefox
  18. Why does my WordPress show a 404 message for 403 forbidden directories?
  19. Moved to new server, all pages work EXCEPT home page (page not found)
  20. High CPU usage on 404 errors
  21. How to fix “failed to set referrer policy: The value ‘ ‘ is not one of…”?
  22. “Lost password” page triggers 404
  23. 404 to 301 – Fixing old links
  24. How do I bypass WordPress 404 handling?
  25. $error = 404 after caught add_rewrite_rule
  26. How do I go about fixing this apparently messed up upgrade?
  27. WordPress Stats keeps showing non-existent post as a top post?
  28. WP Rest API not working
  29. What does do_action(‘admin_init’); does actually?
  30. Form in WordPress : 404
  31. Why is my Javascript console showing a 404 error for a file called “null” on a clean WordPress install?
  32. Why Runtime service worker (runtime-service-worker.js) is being loaded, but can’t be found?
  33. Non-existent page returns code 200
  34. WP is redirecting instead of going to 404
  35. Conditional for 404 page not work
  36. Nginx with WordPress not showing template 404 for certain file types
  37. post parameter ‘name’ 404 error
  38. Intermittently missing pages and posts in WordPress
  39. Getting a 404 in Debugger for example.com/wp-admin/Array?
  40. oEmbed 404 errors when trying to use embed block
  41. Intercept 404 and try to serve another content if exists?
  42. 404 after moving localhost wp to server
  43. Intermittent 404 errors, rewrite rules, and BBPress
  44. How do I show the WP admin error page?
  45. WordPress takes too long to show 404 error on images (on LEMP stack)
  46. WordPress Post – On Post – 404 Page Not Found
  47. How to find out which function is causing a 404
  48. Template redirect template loaded, but the header 404
  49. Prevent WordPress from interpreting a subfolder?
  50. Getting 404s on New Pages
  51. How can I send an email in my plugin?
  52. All pages after level 1 showing 404 after WordPress migration plugin – how to fix?
  53. index2.php in root causing 404 error
  54. Why I get File Not Found (404 error) when the file is actual there?
  55. WP_DEBUG must be on, otherwise edit post or page will show 404 error
  56. Getting “404 page not found” error when i access to my Login page
  57. Virtual robots.txt missing
  58. Moved from Blogger to WordPress, however I can only see the Google 404 page
  59. Custom 404 page for dashboard
  60. wp-tinymce.php 404
  61. WordPress.org support topics returning 404 [closed]
  62. Display child pages on parent page: 404 message overrules shortcode in page
  63. How can I prevent non-existing wordpress pages from getting redirected to home page
  64. Incorrect url for sharing blog on linkedin [closed]
  65. Catch 404 errors in nested installations
  66. Getting 404 error on my wp rewrite error
  67. WordPress 404 Page displaying on a sub directory that has it’s own 404 page
  68. redirect deleted / drafted pages
  69. 404 error on dynamic stylesheet creation
  70. Why do I have a weird rendering issue only on 404.php caused by wp_nav_menu?
  71. make wordpress log errors in apache log file
  72. How to fix: “The resource you are looking for has been removed, had its name changed, or is temporarily unavailable.”
  73. Page not found (404 Error) even if the page exists?
  74. WordPress refuses to read the .htaccess file and gives a 404 for sub-pages
  75. How to recover WordPress Adress(URL)
  76. Custom JSON feed rewrite
  77. My wordpress website does not show 404 page and results in http 500 error
  78. wp-json Returns 404 Upon Plugin Activation
  79. Page not found – Wamp green, phpmyadmin working
  80. WordPress 404 errors for old plugin files via Google Bot
  81. URL Change – Check if Post Exists Before 404
  82. When I remove get_header() from 404 page, my css doesnt work
  83. WPML – 404 Error when I try to pass GET parameters in my “different languages in directories” installation
  84. How to use wp_footer() on a 404 page?
  85. How to direct user to actual 404 page when a check is false in single.php?
  86. Sub Domain’s Pages return 404
  87. Is the 404 page the same as “well this is embarrasing” page?
  88. Google 404 Errors
  89. Some users getting a 404 when previewing draft posts/pages
  90. WordPress Installation in Subfolder only works half
  91. Page not found if mod_cache_disk is active
  92. Why aren’t links clickable on my 404 error page? [closed]
  93. full blog working fine but post-new.php throwing 404
  94. Blank TinyMCE and 404 errors on assets
  95. How do I redirect a permalink for a Draft post to a custom 404 page?
  96. Link to WP-CONTENT not working
  97. Scheduling publish of a new version of existing page results in 404
  98. Page not found but cannot make a new one because the slug is already there
  99. No 404 page available
  100. Multiple 404.php templates based on a post_type
Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)