the graph didnt show up.

[Vim]

Hello dears. I've downloaded and imported the template for Cisco Access points from this topic "http://forums.cacti.net/about4901.html"
I'm creating the graph but it is not even show.
here what i see from log and using the rrdtool and snmpget

09/14/2015 02:56:01 PM - POLLER: Poller[0] CACTI2RRD: /usr/bin/rrdtool update /usr/share/cacti/site/rra/wlan1_aironet_assoc_g_2275.rrd --template Aironet_Assoc_G 1442224561:35
09/14/2015 02:56:01 PM - CMDPHP: Poller[0] Host[94] DS[2275] SNMP: v2: 10.240.5.250, dsname: Aironet_Assoc_G, oid: .1.3.6.1.4.1.9.9.273.1.1.2.1.1.1, output: 35
09/14/2015 02:56:01 PM - POLLER: Poller[0] CACTI2RRD: /usr/bin/rrdtool update /usr/share/cacti/site/rra/wlan1_aironet_assoc_a_2274.rrd --template Aironet_Assoc_A 1442224561:11
09/14/2015 02:56:01 PM - CMDPHP: Poller[0] Host[94] DS[2274] SNMP: v2: 10.240.5.250, dsname: Aironet_Assoc_A, oid: .1.3.6.1.4.1.9.9.273.1.1.2.1.1.2, output: 11

/usr/bin/rrdtool fetch /usr/share/cacti/site/rra/wlan1_aironet_assoc_g_2275.rrd AVERAGE
/usr/bin/rrdtool fetch /usr/share/cacti/site/rra/wlan1_aironet_assoc_a_2274.rrd AVERAGE

1442222400: -nan
1442222700: -nan
1442223000: -nan
1442223300: -nan
1442223600: -nan
1442223900: -nan
1442224200: -nan
1442224500: 1.1000000000e+01
1442224800: 1.1796666667e+01
1442225100: 1.1230000000e+01
1442225400: 1.1780000000e+01
1442225700: 1.2800000000e+01
1442226000: -nan

root@nms-btc:~# snmpwalk -v 2c -c name hostname .1.3.6.1.4.1.9.9.273.1.1.2
SNMPv2-SMI::enterprises.9.9.273.1.1.2.1.1.1 = Gauge32: 35
SNMPv2-SMI::enterprises.9.9.273.1.1.2.1.1.2 = Gauge32: 13

snmpget -v 2c -c name hostname .1.3.6.1.4.1.9.9.273.1.1.2.1.1.1
SNMPv2-SMI::enterprises.9.9.273.1.1.2.1.1.1 = Gauge32: 34

snmpget -v 2c -c name hostname .1.3.6.1.4.1.9.9.273.1.1.2.1.1.2
SNMPv2-SMI::enterprises.9.9.273.1.1.2.1.1.2 = Gauge32: 13

can someone please point me to where to find the root of problem?
thank you.

p.s.

Also here what i see in source of graph

/usr/bin/rrdtool graph - \
--imgformat=PNG \
--start='1442140223' \
--end='1442226623' \
--title='WLAN1 - Associations' \
--base='1000' \
--height='120' \
--width='500' \
--alt-autoscale-max \
--lower-limit='0' \
COMMENT:"From 2015/09/13 15\:30\:23 To 2015/09/14 15\:30\:23\c" \
COMMENT:" \n" \
--vertical-label='Associations' \
--slope-mode \
--font TITLE:10: \
--font AXIS:7: \
--font LEGEND:8: \
--font UNIT:7: \
DEF:a='/usr/share/cacti/site/rra/wlan1_aironet_assoc_g_2275.rrd':'Aironet_Assoc_G':LAST \
DEF:b='/usr/share/cacti/site/rra/wlan1_aironet_assoc_a_2274.rrd':'Aironet_Assoc_A':LAST \
AREA:a#00FF00FF:'802.11g Clients' \
GPRINTLAST:'Current\:%8.2lf %s' \
GPRINTAVERAGE:'Average\:%8.0lf' \
GPRINTMAX:'Maximum\:%8.2lf %s\n' \
AREA:b#FF0000FF:'802.11a Clients' \
GPRINTLAST:'Current\:%8.2lf %s' \
GPRINTAVERAGE:'Average\:%8.2lf %s' \
GPRINTMAX:'Maximum\:%8.2lf %s\n'