Hi, I faced this problem many times then i solved it. please follow the instruction use chcon for sitepath (chcon stands for Change Context. This command is used to change the SELinux security context of a file) Please run both command (if not run please add sudo first. $SITE_PATH is your application path)

chcon -R -t httpd_sys_content_t $SITE_PATH 
chcon -R -t httpd_sys_rw_content_t $SITE_PATH

make sure application is in correct ownership (nginx is your username, $SITE_PATH is your application path)

sudo chown -R nginx:nginx $SITE_PATH 

hopefully it will run. if not run please change the access permissions of file system objects

sudo chmod -R 755 storage bootstrap/cache

hopefully it will solve your problem. if not please fill free to reply