White Screen of Death error

According to the error you are defining WP_CACHE as true somewhere (maybe in wp-config.php?). This way WordPress is looking for a file that doesn’t exist in default installation.

Disable it and the error will be gone.

You can also create an empty file advanced-cache.php in wp-content/ directory if you are unable to find WP_CACHE

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