Edit image preview is not displayed

By default, wp-config.php might not have a closing tag ?> and this is acceptable and by design. The issue may arise from whitespace in some other .php file. In my case, I had whitespace after the closing tag of my functions.php file for my child theme. Once I removed that whitespace, the images are showing up again and I can crop.

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)