WordPress database error Duplicate entry for key ‘slug’

Are you adding “gaming-laptops” as a tag on posts on a regular basis?

If not, then you might be hacked and have something trying to post spam onto your system, just doing it poorly and thus creating error messages.

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