php - Apache Returns 403 forbidden -


i have api project written in php 7.0.22 using slim 3.0 framework. app api running on aws (ec2) server using elastic load balancer ubuntu 14.04.5, apache 2.4.7.

most of time requests return valid response of them return "403 forbidden" (the same requests return valid response)

i checked apache logs there's nothing there. think blockage comes server.

i tried find out if there kind of module can cause this. did not find problem. list of modules : 

array (     [0] => core     [1] => mod_so     [2] => mod_watchdog     [3] => http_core     [4] => mod_log_config     [5] => mod_logio     [6] => mod_version     [7] => mod_unixd     [8] => mod_access_compat     [9] => mod_alias     [10] => mod_auth_basic     [11] => mod_authn_core     [12] => mod_authn_file     [13] => mod_authz_core     [14] => mod_authz_host     [15] => mod_authz_user     [16] => mod_autoindex     [17] => mod_deflate     [18] => mod_dir     [19] => mod_env     [20] => mod_evasive20     [21] => mod_filter     [22] => mod_mime     [23] => prefork     [24] => mod_negotiation     [25] => mod_php5     [26] => mod_rewrite     [27] => mod_setenvif     [28] => mod_socache_shmcb     [29] => mod_ssl     [30] => mod_status )

where can blockage come from?


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