Hacked site using transient API?

Should be the transient(cache files) of the plugin wp-less that convert the css code in less through a compiler.

After downloading wp-less check the compiler.class to see how the plugin cache the code.

I don’t think this is hacking.

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