internal server error 500 php script ubuntu

cek folder /etc/php/7.0/apache2

edit php.ini
uncomment baris

display_errors
   Default Value: On
   Development Value: On
   Production Value: Off
 display_startup_errors
   Default Value: Off
   Development Value: On
   Production Value: Off
 error_reporting
   Default Value: E_ALL & ~E_NOTICE & ~E_STRICT & ~E_DEPRECATED
   Development Value: E_ALL
   Production Value: E_ALL & ~E_DEPRECATED & ~E_STRICT
 html_errors
   Default Value: On
   Development Value: On
   Production value: On
 log_errors
   Default Value: Off
   Development Value: On
   Production Value: On
 max_input_time
   Default Value: -1 (Unlimited)
   Development Value: 60 (60 seconds)
   Production Value: 60 (60 seconds)
 output_buffering
   Default Value: Off
   Development Value: 4096
   Production Value: 4096
 register_argc_argv
   Default Value: On
   Development Value: Off
   Production Value: Off
 request_order
   Default Value: None
   Development Value: "GP"
   Production Value: "GP"
 session.gc_divisor
   Default Value: 100
   Development Value: 1000
   Production Value: 1000
 session.hash_bits_per_character
   Default Value: 4
   Development Value: 5
   Production Value: 5
 short_open_tag
   Default Value: On
   Development Value: Off
   Production Value: Off
 track_errors
   Default Value: Off
   Development Value: On
   Production Value: Off
 url_rewriter.tags
   Default Value: "a=href,area=href,frame=src,form=,fieldset="
   Development Value: "a=href,area=href,frame=src,input=src,form=fakeentry"
   Production Value: "a=href,area=href,frame=src,input=src,form=fakeentry"
 variables_order
   Default Value: "EGPCS"
   Development Value: "GPCS"
   Production Value: "GPCS"