Headers already sent on a frontend post form using wp_redirect before get_header

try this.

 echo 'Please enter a title';

Remove this line & check your output.

Related Posts:

  1. How to edit a user profile on the front end?
  2. How to display user registration form on front-end of the website?
  3. What is an easy way to display a front-end user registration form?
  4. Autocomplete for taxonomy input boxes on a front end form
  5. Built-in data validation function for URLs
  6. How to prevent page from resubmit on refresh when “Cannot modify header information – headers” warning shows
  7. How to edit custom user meta information front end
  8. Adding a new user from the front end
  9. Saving frontend form data in wordpress
  10. Validating custom fields before post save
  11. WordPress Frontend Post Form (Bootstrap Modal) Not Creating Post
  12. Front end update_post_meta Help
  13. Front end posting, not working wp_redirect with ‘cannot modify header information’ error
  14. Cannot modify header form resubmits data on refresh
  15. wp_nonce for Front-End submission form not working
  16. Update a string from the front-end
  17. How to reproduce the post format field in a front end form?
  18. How to define form action in JSF?
  19. Custom form, shortcode, and submit handler
  20. Let readers suggest edits from the frontend
  21. Creating a contact form without a plugin [closed]
  22. How to submit data from HTML form?
  23. How to link WordPress heartbeat to ajax form
  24. Can I verify nonce which was generated on a different WP site?
  25. Sending form data via PHPMailer – How to action PHP script from a form
  26. how to handle forms in multiple pages?
  27. Redirect after successful registration with fronted registration form
  28. Gravity Forms skip form if already filled out using cookie?
  29. One comment per user per post
  30. Trying to save and display a wp_editor()
  31. Using the WordPress selected() function
  32. Return to option page after running PHP script
  33. Stripe Error: must provide source or customer [closed]
  34. How to submit form in a PHP file in WordPress?
  35. CRUD front end for mySQL in WordPress
  36. How to redirect new WordPress user to previous page after registering
  37. Google Map Latitude and Longitude values in form
  38. Show an image in my header.php
  39. How to properly add a custom submenu to the user’s admin menu
  40. WordPress form to shortcode
  41. Create Contact7 Form programmatically [closed]
  42. recaptcha working on local but not on live wordpress sites [closed]
  43. User input form field value validation ninja forms 3
  44. Creating a contact form with Laravel frontend
  45. Make a form that will send email to all the authors in selected category [closed]
  46. Can I make Contact Form 7 change over to a new page? [closed]
  47. How dynamically change wp_mail behaviour, sending html or plain text based on conditions?
  48. A mandatory agreement form to access another page?
  49. textarea field is getting escaped for some unknown reason
  50. Problem in getting Value through POST method after Login
  51. Where to add css file that I want my forms to use?
  52. how to add a custom form in a page
  53. How to Collect Keyword and Search Engine Data on Webforms?
  54. Create a registration form with a PayPal checkout fee? [closed]
  55. free form wordpress
  56. comment form name and email not working?
  57. Sort populated GravityForms list alphabetically [closed]
  58. Checkboxes in a wordpress form are not showing as checked when selected [closed]
  59. Radio&Checkbox buttons Contact form 7 not clickable
  60. How to add a placeholder to the protected post password input
  61. How to change a form end email?
  62. Simple form validation for custom post type in front end. Not working
  63. Restore Cforms II Form Presets
  64. Front end posting
  65. Making an input field required from WP’s perspective
  66. How to take large file uploads from users the right way
  67. wordpress forms submit
  68. wordpress blog, is there a way to make anyone post in a blog without having login info
  69. gravityform – retrieve multiple check answers “keys” instead of “values”
  70. Code for front end validation for forms not working
  71. How do I redirect the browser to 404 page, if no posts are found in home page
  72. using esc_html_e string in custom form using code snippets
  73. How do I implement form handling when form is custom HTML?
  74. How to edit custom table data in frontend
  75. Forms cut off when on mobile
  76. How to create a custom range slider in wordpress form?
  77. Sorting wordpress data in excel
  78. Quickly Maintain/edit 100+ WordPress Forms on multiple websites
  79. Pricing depending on selected items in a multi step form
  80. Prevent malicious scripts to be submitted in post
  81. Sending Form data as Attachment
  82. Trigger action when submitting form with WPForms [closed]
  83. Form submissions that require users ID# [closed]
  84. Unable to submit form using admin post wordpress
  85. Form data from wordpress theme to be submitted in other site url
  86. Send contact form to a specific referrer-email adres
  87. Post from front end form to post_meta
  88. Pay before posting (frontend insert post)
  89. admin_post in object oriented plugin
  90. Contact form spam, without form?
  91. How to send form values from the script in functions.php and not from the form on my website?
  92. Multi-part form and wp_redirect()
  93. Issue with contact form 7
  94. Cannot modify header information – headers already sent
  95. Advanced searching form
  96. Cannot access a file in the theme (twentynineteen-child) folder
  97. Dropdown List Won’t Display Selected Option After Submit / Refresh
  98. Adding Mailchimp API key dynamically
  99. WordPress – custom user flow registration approval
  100. I cannot enter the letter C in the form [closed]