Ungültige Taxonomie Fehlerbehebung

WP_Error Object ( [errors] => Array ( [invalid_taxonomy] => Array ( [0] => Ungültige Taxonomie. ) ) [error_data] => Array ( ) [additional_data:protected] => Array ( ) )

The `WP_Error` object you are seeing indicates that there is an issue with a taxonomy in your WordPress setup. The specific error message is "Ungültige Taxonomie," which translates to "Invalid Taxonomy" in English. Here are some steps you can take to troubleshoot and resolve this issue:

1. **Check Taxonomy Registration**: Ensure that the taxonomy you are trying to use is registered correctly. Check the `register_taxonomy` function in your theme or plugin to confirm that it is set up properly.

2. **Verify Taxonomy Name**: Make sure you are using the correct taxonomy name when querying or assigning it to posts. The name should match the one registered.

3. **Check for Typos**: Look for any typos in the taxonomy name in your code where you are trying to use it.

4. **Flush Rewrite Rules**: Sometimes, permalink settings can cause issues with taxonomies. Go to **Settings > Permalinks** in your WordPress dashboard and simply click "Save Changes" to flush rewrite rules.

5. **Ensure Taxonomy Exists**: Check if the taxonomy is defined in your WordPress database. You can do this by looking into the `wp_terms` and `wp_term_taxonomy` tables to see if the taxonomy exists.

6. **Check Plugin Conflicts**: If you recently installed or updated plugins, one of them may be conflicting with your taxonomies. Disable plugins one by one to see if the issue resolves.

7. **Debugging Information**: Add debugging information to see where the error is occurring. You can use `error_log()` to log values at various points in your code.

If you provide more context on where you are encountering this error (e.g., while saving a post, querying posts, etc.), I can offer more specific guidance.