![Fatal error: Call to undefined function get_current_screen · Issue #2938 · woocommerce/woocommerce-admin · GitHub Fatal error: Call to undefined function get_current_screen · Issue #2938 · woocommerce/woocommerce-admin · GitHub](https://user-images.githubusercontent.com/1922453/65399995-cb6a5880-de13-11e9-8690-91d1726dadee.png)
Fatal error: Call to undefined function get_current_screen · Issue #2938 · woocommerce/woocommerce-admin · GitHub
![Fatal error: Call to undefined function field_attach_load() in includes/entity.inc on line 321 during install [#481758] | Drupal.org Fatal error: Call to undefined function field_attach_load() in includes/entity.inc on line 321 during install [#481758] | Drupal.org](https://www.drupal.org/files/issues/drupal-install-error.gif)
Fatal error: Call to undefined function field_attach_load() in includes/entity.inc on line 321 during install [#481758] | Drupal.org
![errors - Call to undefined function wp_embed_register_handler() - WordPress Development Stack Exchange errors - Call to undefined function wp_embed_register_handler() - WordPress Development Stack Exchange](https://i.stack.imgur.com/miQsb.png)
errors - Call to undefined function wp_embed_register_handler() - WordPress Development Stack Exchange
![php - Fatal error: Uncaught Error: Call to undefined function test() - WordPress Development Stack Exchange php - Fatal error: Uncaught Error: Call to undefined function test() - WordPress Development Stack Exchange](https://i.stack.imgur.com/aXSLT.gif)
php - Fatal error: Uncaught Error: Call to undefined function test() - WordPress Development Stack Exchange
![php 7.2 - Fatal error: Uncaught Error: Call to undefined function mb_detect_encoding() in Uniform Server with PHP 7.2 - Stack Overflow php 7.2 - Fatal error: Uncaught Error: Call to undefined function mb_detect_encoding() in Uniform Server with PHP 7.2 - Stack Overflow](https://i.stack.imgur.com/gJwOy.png)
php 7.2 - Fatal error: Uncaught Error: Call to undefined function mb_detect_encoding() in Uniform Server with PHP 7.2 - Stack Overflow
![Call to undefined function openssl_random_pseudo_bytes() in C:\wamp\www\online_shop\system\library\session.php on line 62 · Issue #5839 · opencart/opencart · GitHub Call to undefined function openssl_random_pseudo_bytes() in C:\wamp\www\online_shop\system\library\session.php on line 62 · Issue #5839 · opencart/opencart · GitHub](https://user-images.githubusercontent.com/25228602/28890145-c9dac1b4-77e3-11e7-969b-1347ff2a5d8b.png)
Call to undefined function openssl_random_pseudo_bytes() in C:\wamp\www\online_shop\system\library\session.php on line 62 · Issue #5839 · opencart/opencart · GitHub
![Call to undefined function Yajra\Pdo\oci_connect() in CLI · Issue #496 · yajra/laravel-oci8 · GitHub Call to undefined function Yajra\Pdo\oci_connect() in CLI · Issue #496 · yajra/laravel-oci8 · GitHub](https://user-images.githubusercontent.com/17038330/54153272-2951c880-440d-11e9-93bf-4d3adf18ed21.png)
Call to undefined function Yajra\Pdo\oci_connect() in CLI · Issue #496 · yajra/laravel-oci8 · GitHub
![wordpress - Fatal error: Call to undefined function get_header() in /home/theun3wr/public_html/author.php on line 11 - Stack Overflow wordpress - Fatal error: Call to undefined function get_header() in /home/theun3wr/public_html/author.php on line 11 - Stack Overflow](https://i.stack.imgur.com/bgE9K.png)
wordpress - Fatal error: Call to undefined function get_header() in /home/theun3wr/public_html/author.php on line 11 - Stack Overflow
![Fatal error: Call to undefined function field_attach_load() in includes/entity.inc on line 321 during install [#481758] | Drupal.org Fatal error: Call to undefined function field_attach_load() in includes/entity.inc on line 321 during install [#481758] | Drupal.org](https://www.drupal.org/files/FirefoxScreenSnapDrupal001.png)