help, cant install LOL

so i just went on re-installing LOL after 4-5 months of not playing. And after downloading the LOL installer going through the steps, you know, "LOL is gona install this and this on ur pc, accept bla bla bla" well, i just get a message "unspecific error occurred. Please check the logs for more information" and im kinda suprised cus im re-installing fresh. Someone halp
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