Problem with installation

Plx i dnt knw hw 2 instal johncms, i uplded nd xtracted d script den i chm0ded som folders dat i was asked 2, i wanted 2 install lyk dis (mysite.com/install) nd they said dat a fatal error, has occurd nd i shud c0rect d err0r. So i dnt knw wat 2 do. Sombody hlp me plx

upload screen this error

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