EN 
PL 
DE 
While working with WordPress, users may encounter various problems. One of them is the “Failed to Open Stream Error”. This specific warning appears when WordPress is unable to open a specific file or cannot access a specific directory. Fortunately, although the error may seem disturbing, there are several effective methods to fix it. Below are the most commonly used solutions.
1. Check the file path
The first thing you need to do is make sure the file path is correct. The “Failed to Open Stream” error often appears when the file path is incorrect. Check if the file exists in the specified location. If the file exists but the path is incorrect, make the appropriate corrections.
2. Check file access rights
The second possible cause is inappropriate access rights to files or directories. The default settings for files are 644 and for directories are 755. If you see that the access rights are different, use an FTP client such as FileZilla to change them.
A WordPress plugin like “File Manager” can also help in this situation. Thanks to it, you can easily change access rights to files and folders directly from your WordPress dashboard.
3. Disable plugins and themes
Sometimes the “Failed to Open Stream” error may be caused by a conflict between plugins or themes. To check if this is the cause, you can temporarily disable all plugins and change the theme to the default one. If the error disappears, it was caused by a conflict. You can now enable plugins and themes one at a time to identify which one is responsible for the problem.
4. WordPress update and reinstallation
If none of the above solutions help, you can try updating or reinstalling WordPress. This is a last resort solution that should only be used if all else fails. Before starting this process, we strongly recommend that you create a backup of your site to prevent data loss.
The “Failed to Open Stream” error can be frustrating, but in most cases it is easy to fix. It is important to approach the problem methodically and try different solutions, starting with the simplest ones. Remember that the security of your website is paramount, so always make a backup before making any changes.