Here are some steps you can take to fix the “WordPress failed to open stream error”:

The “failed to open stream error” in WordPress usually occurs when there is an issue with file permissions or file paths.

When WordPress tries to access a file on your server, it requires the appropriate permissions to access that file.

If it doesn’t have the correct permissions, you will get the “failed to open stream” error.

How to fix the “WordPress failed to open stream error”

Step 1: Check the File Path
The first step is to check the file path.

Make sure that the file you are trying to access exists in the correct location.

If the file has been moved or deleted, you will get the “failed to open stream” error.

You can check the file path in your WordPress dashboard or by using an FTP client.

Step 2: Check File Permissions
If the file path is correct, the next step is to check file permissions.

You need to make sure that the file has the correct permissions to be accessed by WordPress.

The recommended file permission for WordPress files is 644.

You can change file permissions using an FTP client or through your hosting control panel.

Step 3: Check Folder Permissions
In addition to file permissions, you also need to check folder permissions.

Make sure that the folder where the file is located has the correct permissions.

The recommended folder permission for WordPress is 755.

You can change folder permissions using an FTP client or through your hosting control panel.

Step 4: Check for Plugin or Theme Conflicts
If the file path and permissions are correct, the next step is to check for plugin or theme conflicts.

Sometimes a plugin or theme can cause the “failed to open stream” error.

You can do this by deactivating all plugins and switching to a default WordPress theme.

If the error goes away, you can then activate your plugins and theme one-by-one to find the culprit.

Step 5: Increase PHP Memory Limit
Sometimes the “failed to open stream” error can be caused by a lack of memory.

You can increase the PHP memory limit in your WordPress wp-config.php file.

Add the following code to the file:

define( ‘WP_MEMORY_LIMIT’, ‘256M’ );

This will increase the PHP memory limit to 256MB.

Step 6: Contact Your Host
If none of the above steps work, you may need to contact your host. They can help you identify the issue and resolve it.

In summary, the “failed to open stream” error in WordPress can be caused by file path issues, file permissions, plugin or theme conflicts, a lack of memory, or other server-related issues.

By following the above steps, you should be able to resolve the error and get your WordPress site back up and running.