Dear i got this error msg please help

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2017/09/17 22:04:05 [crit] 1278#0: *13 open() "/var/lib/nginx/tmp/fastcgi/1/00/0000000001" failed (13: Permission denied) while reading upstream, client: 151.255.87.244, server: _, request: "GET /scof/scof.php?hash=es2 HTTP/1.1", upstream: "fastcgi://unix:/var/run/php-fpm/php-fpm.sock:", host: "imoham3d.ml"
2017/09/17 22:04:05 [crit] 1278#0: *18 open() "/var/lib/nginx/tmp/fastcgi/2/00/0000000002" failed (13: Permission denied) while reading upstream, client: 51.36.218.237, server: _, request: "GET /scof/scof.php?hash=es2 HTTP/1.1", upstream: "fastcgi://unix:/var/run/php-fpm/php-fpm.sock:", host: "imoham3d.ml"
2017/09/17 22:04:06 [crit] 1278#0: *23 open() "/var/lib/nginx/tmp/fastcgi/3/00/0000000003" failed (13: Permission denied) while reading upstream, client: 5.41.16.159, server: _, request: "GET /scof/scof.php?hash=es2 HTTP/1.1", upstream: "fastcgi://unix:/var/run/php-fpm/php-fpm.sock:", host: "imoham3d.ml"
2017/09/17 22:04:06 [crit] 1278#0: *34 open() "/var/lib/nginx/tmp/fastcgi/4/00/0000000004" failed (13: Permission denied) while reading upstream, client: 94.129.167.156, server: _, request: "GET /scof/scof.php?hash=es2 HTTP/1.1", upstream: "fastcgi://unix:/var/run/php-fpm/php-fpm.sock:", host: "imoham3d.ml"

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