{"id":5995,"date":"2020-12-19T09:28:05","date_gmt":"2020-12-19T03:58:05","guid":{"rendered":"https:\/\/blog.pheonixsolutions.com\/?p=5995"},"modified":"2020-12-19T09:28:08","modified_gmt":"2020-12-19T03:58:08","slug":"how-to-solve-the-website-internal-server-error-from-the-following-apache-error-loginvalid-command-header-perhaps-misspelled-or-defined-by-a-module-not-included-in-the-server-config","status":"publish","type":"post","link":"https:\/\/pheonixsolutions.com\/blog\/how-to-solve-the-website-internal-server-error-from-the-following-apache-error-loginvalid-command-header-perhaps-misspelled-or-defined-by-a-module-not-included-in-the-server-config\/","title":{"rendered":"How to solve the Website internal server error from the following apache error log&#8221;Invalid command \u2018Header\u2019 perhaps misspelled or defined by a module not included in the server configuration&#8221;"},"content":{"rendered":"\n<h4 class=\"wp-block-heading\">How to solve the Website internal server error from the following apache error log&#8221;Invalid command \u2018Header\u2019 perhaps misspelled or defined by a module not included in the server configuration&#8221;<\/h4>\n\n\n\n<h4 class=\"wp-block-heading\">Date: 16-12-2020<\/h4>\n\n\n\n<p><strong>Step 1:<\/strong> You are getting above error due to header module is not enabled in Apache on Ubuntu. You need check if mod_headers module is enabled by using the following command.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"55\" src=\"https:\/\/blog.pheonixsolutions.com\/wp-content\/uploads\/2020\/12\/WhatsApp-Image-2020-12-15-at-12.54.07-PM-1024x55.png\" alt=\"\" class=\"wp-image-6000\" srcset=\"https:\/\/pheonixsolutions.com\/blog\/wp-content\/uploads\/2020\/12\/WhatsApp-Image-2020-12-15-at-12.54.07-PM-1024x55.png 1024w, https:\/\/pheonixsolutions.com\/blog\/wp-content\/uploads\/2020\/12\/WhatsApp-Image-2020-12-15-at-12.54.07-PM-300x16.png 300w, https:\/\/pheonixsolutions.com\/blog\/wp-content\/uploads\/2020\/12\/WhatsApp-Image-2020-12-15-at-12.54.07-PM-768x41.png 768w, https:\/\/pheonixsolutions.com\/blog\/wp-content\/uploads\/2020\/12\/WhatsApp-Image-2020-12-15-at-12.54.07-PM-850x46.png 850w, https:\/\/pheonixsolutions.com\/blog\/wp-content\/uploads\/2020\/12\/WhatsApp-Image-2020-12-15-at-12.54.07-PM.png 1280w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p># <code>apache2ctl -M | grep headers<\/code><\/p>\n\n\n\n<p>If you get the following output, mod_headers is enabled and working.<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"># <code>headers_module (shared)<\/code><\/pre>\n\n\n\n<p>If not getting the output, you need to enable the module by using below command.<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"># <code>a2enmod headers<\/code><\/pre>\n\n\n\n<p><strong>Step 2:<\/strong> Restart the Apache web server for changes to take effect by using below command.<\/p>\n\n\n\n<p># <code>service apache2 restart<\/code><\/p>\n\n\n\n<p>Now you can easily access the website on the browser.<\/p>\n\n\n\n<p>Thank you!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>How to solve the Website internal server error from the following apache error log&#8221;Invalid command \u2018Header\u2019 perhaps misspelled or defined by a module not included in the server configuration&#8221; Date: 16-12-2020 Step 1: You are getting above error due to header module is not enabled in Apache on Ubuntu. You&hellip; <a href=\"https:\/\/pheonixsolutions.com\/blog\/how-to-solve-the-website-internal-server-error-from-the-following-apache-error-loginvalid-command-header-perhaps-misspelled-or-defined-by-a-module-not-included-in-the-server-config\/\" class=\"more-link read-more\" rel=\"bookmark\">Continue Reading <span class=\"screen-reader-text\">How to solve the Website internal server error from the following apache error log&#8221;Invalid command \u2018Header\u2019 perhaps misspelled or defined by a module not included in the server configuration&#8221;<\/span><i class=\"fa fa-arrow-right\"><\/i><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[313,282,220],"tags":[398,528,274],"class_list":{"0":"post-5995","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"hentry","6":"category-apache","7":"category-ubuntu","8":"category-web-server","9":"tag-apache2","10":"tag-htaccess-2","11":"tag-ubuntu","12":"h-entry","14":"h-as-article"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Pheonix Solutions - We Empower Your Business Growth<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/pheonixsolutions.com\/blog\/how-to-solve-the-website-internal-server-error-from-the-following-apache-error-loginvalid-command-header-perhaps-misspelled-or-defined-by-a-module-not-included-in-the-server-config\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Pheonix Solutions - We Empower Your Business Growth\" \/>\n<meta property=\"og:description\" content=\"How to solve the Website internal server error from the following apache error log&#8221;Invalid command \u2018Header\u2019 perhaps misspelled or defined by a module not included in the server configuration&#8221; Date: 16-12-2020 Step 1: You are getting above error due to header module is not enabled in Apache on Ubuntu. 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