if a web scenario is opened and a node is switched, errors are displayed :

Undefined index: httptestid[/var/www/zabbix/httpdetails.php:83]
Error in query [SELECT ht.* FROM httptest ht, applications a WHERE (a.hostid IN (200200000010048,200200000010056,200200000010053,200200000010047,200200000010049,200200000010050,200200000010051,200200000010052,200200000010054,
200200000010055,200200000010025,200200000010026,200200000010012,200200000010027,200200000010020,200200000010003,200200000010031,200200000010030,
200200000010028,200200000010029,200200000010023,200200000010032,200200000010018,200200000010022,200200000010033,200200000010034,200200000010019,
200200000010024,200200000010008,200200000010035,200200000010013,200200000010036,200200000010021,200200000010038,200200000010042,200200000010039,
200200000010001,200200000010014,200200000010040,200200000010041,200200000010044,200200000010046,200200000010011,200200000010009,200200000010045,
200200000010016,200200000010007,200200000010015,200200000010004,200200000010043,200200000010010,200200000010002,200200000010017)) AND a.applicationid=ht.applicationid AND ht.httptestid=] [You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1]
mysql_fetch_assoc(): supplied argument is not a valid MySQL result resource[/var/www/zabbix/include/db.inc.php:546]
mysql_free_result(): supplied argument is not a valid MySQL result resource[/var/www/zabbix/include/db.inc.php:548]