What do these “Failed to import” errors mean and how do I fix it?
You need to activate the WooCommerce plugin on your site. Before, importing the XML file.
errors
Fatal error: require(): Failed opening required ‘WP_DIRwp-blog-header.php’
It looks as though WP_DIR is being interpreted as a string. Is that constant defined anywhere before this code is being run? My guess is that it is not as PHP will assume it’s a string and that is why the location is WP_DIRwp-blog-header.php and not an actual file path. Hope this helps!
Sodium compat error
You need to have the sodium PHP extension installed & enabled if you’re running PHP >7.2
List Category Posts plugin upgrade fails with fatal error
Yes, I’ve asked for issues to be reported here, so that you can get answers from the larger community of WordPress users and developers at WordPress Answers. Regarding the issue, other user also reported it, and it is due to the webhost using PHP 4. Line 10 of CatListDisplayer.php declares a private attribute. PHP 4 … Read more
How can I create a custom page for this error?
Check out the source of dead_db() which powers the message. You’ll see that you can create a file db-error.php in your WP content directory (which by default is /wp-content/) and it’ll load that instead!
Call to undefined function get_header() in index.php
WordPress theme templates are not meant to be executed directly. They are loaded by WordPress core (after appropriate environment had been set up) according to Template Hierarchy.
Getting Warnings & Notices from Fresh WordPress 3.1.2 install
it sounds like even though its a fresh install of WP 3.1.2 that you are also using an existing theme that is using a deprecated function (you havent said so but im presuming), if so paste this into your themes functions.php file (if your theme doesnt have one just create one and save it in … Read more
How to handle core code throwing notice on valid input?
Simply use the @ operator in front of a function to suppress an error message/notice/whatever. Fun as it is: Even the image_resize() function uses it for chmod. 🙂
Recommend a guide to catching plugin errors, please?
A white screen of death is typically a fatal PHP error, most of the time due to a syntax error. This often sends no errors to the browser. Some things you can do: Turn on PHP error_log in your php.ini file and set the error_reporting levels. http://php.net/manual/en/errorfunc.configuration.php Error info: http://www.php.net/manual/en/errorfunc.constants.php Alternatively or in combination you … Read more
Handling duplicates with wp_insert_term()
if ( is_wp_error($term_id) ) { // oops WP_Error obj returned, so the term existed prior // echo $term_id->get_error_message(); } See if that works for you.