Apache stats - missing CPU output

[clusterx]

Debian 9
Zabbix 3.4
Apache/2.4.10
mod_event

Hi,
I have installed the apache stats it works but the cpu load items and graphs are empty
any idea?

`Metrics to be send

SERVER METRIC VALUE
host1.myhost.tld custom.apache[failed] 0
host1.myhost.tld custom.apache[ServerVersion] 0
host1.myhost.tld custom.apache[Total Accesses] 228577
host1.myhost.tld custom.apache[Total kBytes] 7410788
host1.myhost.tld custom.apache[CPULoad] .1296
host1.myhost.tld custom.apache[CPUSystem] 0
host1.myhost.tld custom.apache[CPUUser] 0
host1.myhost.tld custom.apache[Load1] 0
host1.myhost.tld custom.apache[Load5] 0
host1.myhost.tld custom.apache[Load15] 0
host1.myhost.tld custom.apache[Uptime] 104792
host1.myhost.tld custom.apache[ReqPerSec] 2.18124
host1.myhost.tld custom.apache[BytesPerSec] 72416.3
host1.myhost.tld custom.apache[BytesPerReq] 33199.5
host1.myhost.tld custom.apache[BusyWorkers] 1
host1.myhost.tld custom.apache[IdleWorkers] 575
host1.myhost.tld custom.apache[WaitingForConnection] 576
host1.myhost.tld custom.apache[StartingUp] 1
host1.myhost.tld custom.apache[ReadingRequest] 1
host1.myhost.tld custom.apache[SendingReply] 2
host1.myhost.tld custom.apache[KeepAlive] 1
host1.myhost.tld custom.apache[DNSLookup] 1
host1.myhost.tld custom.apache[ClosingConnection] 1
host1.myhost.tld custom.apache[Logging] 1
host1.myhost.tld custom.apache[GracefullyFinishing] 1
host1.myhost.tld custom.apache[IdleCleanupOfWorker] 1
host1.myhost.tld custom.apache[OpenSlotWithNoCurrentProcess] 961
host1.myhost.tld custom.apache[TotalWorkers] 1536`

if I check w/ with lynxs
` Server Version: Apache/2.4.10 (Debian) OpenSSL/1.0.1t mod_fcgid/2.3.9
Server MPM: event
Server Built: Sep 20 2017 04:37:43
________________________________________________________________________________________________________________________________

Current Time: Wednesday, 14-Mar-2018 19:30:12 CET
Restart Time: Tuesday, 13-Mar-2018 13:34:53 CET
Parent Server Config. Generation: 6
Parent Server MPM Generation: 5
Server uptime: 1 day 5 hours 55 minutes 19 seconds
Server load: 0.47 0.33 0.32
Total accesses: 237457 - Total Traffic: 7.3 GB
CPU Usage: u121.42 s28.64 cu0 cs0 - .139% CPU load
2.2 requests/sec - 71.0 kB/second - 32.2 kB/request
1 requests currently being processed, 575 idle workers

PID Connections Threads Async connections
total accepting busy idle writing keep-alive closing
7386 0 yes 0 64 0 0 0
7385 0 yes 0 64 0 0 0
11259 0 yes 0 64 0 0 0
32040 0 yes 0 64 0 0 0
7384 0 yes 0 64 0 0 0
9932 0 yes 1 63 0 0 0
8908 0 yes 0 64 0 0 0
7383 1 yes 0 64 0 1 0
15238 2 yes 0 64 0 1 1
Sum 3 1 575 0 2 1`