Hello
i have problem with new frontend.
in top i see httpd with 100% load and only after timeout (10 min) this process closes
in http log i see
[Wed Oct 11 13:17:48.165715 2017] [:error] [pid 20921] [client 10.60.15.244:60294] PHP Fatal error: Maximum execution time of 600 seconds exceeded in /usr/share/zabbix/include/classes/api/services/CMap.php on line 407, referer: http://10.60.244.21/zabbix/zabbix.php?action=dashboard.view
after change timeout
[Wed Oct 11 13:27:31.018708 2017] [:error] [pid 27551] [client 10.60.15.244:61233] PHP Fatal error: Maximum execution time of 60 seconds exceeded in /usr/share/zabbix/include/classes/api/services/CMap.php on line 355, referer: http://10.60.244.21/zabbix/zabbix.php?action=dashboard.view
[Wed Oct 11 13:27:32.067715 2017] [:error] [pid 27557] [client 10.60.15.244:61234] PHP Fatal error: Maximum execution time of 60 seconds exceeded in /usr/share/zabbix/include/classes/api/services/CMap.php on line 407, referer: http://10.60.244.21/zabbix/zabbix.php?action=dashboard.view
[Wed Oct 11 13:30:26.335709 2017] [:error] [pid 27607] [client 10.60.15.244:61325] PHP Fatal error: Maximum execution time of 60 seconds exceeded in /usr/share/zabbix/include/classes/api/services/CMap.php on line 355, referer: http://10.60.244.21/zabbix/sysmaps.php
[Wed Oct 11 13:30:39.026714 2017] [:error] [pid 27832] [client 10.60.15.244:61330] PHP Fatal error: Maximum execution time of 60 seconds exceeded in /usr/share/zabbix/include/classes/api/services/CMap.php on line 355, referer: http://10.60.244.21/zabbix/sysmaps.php
[Wed Oct 11 13:32:35.346729 2017] [:error] [pid 29127] [client 10.60.15.133:62911] PHP Fatal error: Maximum execution time of 60 seconds exceeded in /usr/share/zabbix/include/classes/api/services/CMap.php on line 410, referer: http://10.60.15.130/zabbix/zabbix.php?action=map.view&ddreset=1

This user is ZabbixAdmin and have permitted groups
And the error occurs on all browsers.
i can send debug from browser because page don't open