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Fatal error Call to undefined function wp_get_theme()

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Fatal error Call to undefined function wp_get_theme()

Fatal error: Call to undefined function wp_get_theme() Error is a common Error in WordPress. Fixing of Fatal error: wp_get_theme() is not a difficult task. Here we have provided the easiest methods to fix this Fatal Error on your website. Read the Complete article and Resolve Fatal error: undefined function wp_get_theme() error easily.

Fixing Fatal error undefined function wp_get_theme() in WordPress

Do you want to resolve this Fatal error Call to undefined function wp_get_theme() WordPress error? Before that lets, check the reason for the occurrence of this Fatal Error in WordPress. In this article, we have provided the reasons and resolving steps for you. Check and fix the Fatal error Call to undefined function wp_get_theme() Error quickly.

Why Fatal error: wp_get_theme() Error arise?

There are number of reasons for the occurrence of WordPress Fatal error: call to undefined function wp_get_theme() Error. Those are clearly listed here. Take a look at it and learn how to resolve Fatal Error in WordPress.

  • Using old version of WordPress.
  • WordPress auto update failed.
  • Failed WordPress Manual update.
  • WordPress Corrupt.
  • WordPress Missing files.
  • Installing Incompatible Plugins.
  • Installing Incompatible WordPress Theme.

How to Resolve Fatal error: Call to undefined function wp_get_theme() in WordPress?

Browsing internet for getting solution a quick way to fix Fatal error Call to undefined function wp_get_theme() will makes you get stress. The simple and easiest ways are provided here. By following those methods, you can easily resolve Fatal Error from your WordPress site.

Case 1:

If you got Fatal error: Call to undefined function wp_get_theme() Error in your WordPress site because of Using old version of WordPress, Failed WordPress update, WordPress Corrupt or WordPress Missing files then you have to update WordPress manually. Here we have provided the step by step process for you to update WordPress. Follow those steps and fix Fatal error Call to undefined function wp_get_theme() on WordPress.

Update WordPress Manually using cPanel Access

  • First, you have to download the latest version of WordPress zip file.
  • Unzip the downloaded WordPress file.
  • Next, delete the ‘wp-content’ folder from the extracted file.
  • After wp-content folder deleted, you have to zip the WordPress file.
  • Now, Login to your cPanel account.
  • Open File Manager from the File section.
  • Now, a new page will display on the screen.
  • Click on the Upload icon from the top of the page.
  • Now, the new window will display on the screen.
  • Click on the browse button.
  • Next, select WordPress zipped file.
  • After the upload completed, you need to close the Upload files tab.
  • Next, open file manager window.
  • Click on the button Reload.
  • Now, search for the uploaded zip file.
  • Select the uploaded WordPress zip file.
  • Click on the extract icon.
  • a popup window appears on the screen.
  • Next, click on the Extract File(s) button.
  • Now, the extracted folder appears on the Screen.
  • Open the extracted folder WordPress.
  • Now, click on the select all button.
  • Next, click on the move file icon.
  • A new move window will display on the screen.
  • The current path is available at the bottom of the window.
  • Delete the folder name from the path. Once you delete folder name, your files will be moved to the public_html root directory.
  • Click on the Move File(s) Button.
  • Next, click on Up One Level button.
  • Now, the new version WordPress files are moved successfully to the root directory. Moving the files to your root directory will automatically replace the existing WordPress version files.
  • Now, the WordPress is upgraded.
  • Next, select the uploaded zip file and extracted WordPress file.
  • Click on Delete icon from the top of the window.
  • A new Delete window appears on the screen.
  • Click on the button Delete File(s) from that window.
  • After files deleted, you can Logout from cPanel account.
  • Now, you need to Login to your admin area.
  • Now, a database update required message appears on the Screen.
  • Click on the Update WordPress Database button from that message.
  • Next, click on “Continue” to proceed the WordPress update.
  • Finally, your WordPress upgrade has been successfully completed. Now, your WordPress site can work properly without any WordPress fatal error.
Related:  Top 10 Best Contact Form WordPress Plugins

Manual WordPress Update through FTP Access

  • First, you have to download the latest WordPress zip file.
  • Next, unzip the downloaded file.
  • Keep a backup file of your WordPress.
  • Rename the wp-admin and wp-includes directories to wp-admin.bak and wp-includes.bak through FTP.
  • Upload new wp-admin and wp-includes folders to your root directory.
  • Upload new wp-content files to existing wp-content folder. Overwrite the files carefully. Do not delete any other files in the wp-content folder.
  • Now, upload new version of the rest of files to your WordPress root directory.
  • Delete the .maintenance file from your WordPress directory through FTP.
  • Next, login to your WordPress admin area.
  • Go to this http://domain.com/wordpress/wp-admin/upgrade.php link.
  • If your caching enabled then clear your cache data to see the changes.
  • Finally, Your WordPress site can work properly without any errors.
Case 2:

The Fatal error: wp_get_theme() arise because of installing incompatible plugins then you have to rename the plugins folder. Here we have provided the process for you to rename plugins folder on your WordPress site. Take a look at it and learn how to rename WordPress plugins folder using FTP and cPanel access.

Rename Plugin Folder through FTP Access

  • Access your WordPress website through FTP.
  • Open your site root directory.
  • Next, navigate to folder wp-contents.
  • Search for the plugins folder.
  • Rename the plugins folder to backplugins.
  • Now, the plugins on your WordPress website are disabled. Your site can work properly without any Fatal error: Call to undefined function wp_get_theme().

Rename Plugin Folder through cPanel Access

  • Login to your cPanel Account.
  • Now, open your WordPress site root directory.
  • Navigate to wp-contents folder.
  • Next, search for the folder plugins.
  • Rename the folder plugins to backplugins.
  • Now, the installed plugins on your site are disabled. The Fatal error Call to undefined function wp_get_theme() Error is resolved.
Related:  WordPress – Get a better understanding about the WordPress software
Case 3:

If you install a new theme which is incompatible with your WordPress then you will get this WordPress Fatal error: Call to undefined function wp_get_theme() Error on your WordPress website. Do you want to resolve this fatal error? For resolving this Fatal error: wp_get_theme() Error, you have to set a default theme for your WordPress site. Follow the given step by step process and set a default WordPress theme to fix Fatal error: Call to undefined function wp_get_theme() in WordPress.

Rename Theme Folder through FTP Access

  • Acess your WordPress site through FTP.
  • Navigate to folder wp-contents.
  • Next, search for the Themes folder.
  • Rename the Themes folder to backthemes.
  • Now, the default theme is activated on your WordPress website. Your website can work properly without The Fatal error: wp_get_theme() error.

Rename Theme Folder through cPanel

  • Login to your cPanel Account.
  • Navigate to wp-contents folder.
  • Search for the folder Themes.
  • Rename the folder Themes to backthemes.
  • Now, the default theme is activated on your site. The Fatal error Call to undefined function wp_get_theme() Error is resolved.

By following above process, you can fix Fatal error: Call to undefined function wp_get_theme() Error easily. Again if you get any WordPress Error, just visit our site. Here you can get the easiest way to resolve WordPress Errors.

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