There can be several reasons for an error when uploading pictures to WordPress, some common causes are:

  1. File size limit: WordPress has a default file size limit for uploads, typically 2 MB. If your image file is larger than this limit, you will receive an error message. To resolve this issue, you can increase the maximum file upload size in WordPress.
  2. Permissions issue: If the WordPress uploads folder does not have the correct permissions, you will not be able to upload images. You can try resetting the permissions to 744 or 755.
  3. PHP Configuration: If your website is hosted on a server, the server’s PHP settings may be configured to limit the maximum file upload size. To resolve this issue, you can contact your hosting provider and ask them to increase the limit.
  4. Broken image file: If the image file you are trying to upload is corrupt or broken, you will receive an error message. Try uploading a different image to see if the issue is resolved.

If you’re still having trouble uploading images to WordPress, you can consult the WordPress support forum or seek help from a professional WordPress developer.