SNMP ex9200

Hi,

I use prtg to monitor snmp device/juniper ex, for ex2200 and ex3300 i dont face any problem, just setting the snmpv2 community,auth,and clients prtg can query the snmp interface bandwidth/traffic, but when i set on ex9200 it show error "No available interfaces on this device snmp", but i can query snmp uptime on ex9200, is there some config missing ?

Model: ex9208
Junos: 14.2R7.5

[ SNMP ]

contact xxx4;

view RESTRICTED {
    oid .1 include;
}
view all {
    oid .1;
}
view interfaces {
    oid 1.3.6.1.2.1.2 include;
}
community xxx3 {
    authorization read-only;
}
community xxx1 {
    view interfaces;
    authorization read-only;
    clients {
        172.16.30.26/32;
        172.16.30.76/32;
    }
}
community xxx2 {
    authorization read-only;
    clients {
        172.17.3.26/32;
    }
}
trap-group snmp_traps_srv {
    targets {
        172.16.30.26;
    }
}

[SNMP]