Speedtesten (upload)

ERROR: Could not save png to '/var/cache/smokeping/images/Speedtest/Upload_last_10800.png'
/var/cache/smokeping/images/Speedtest/Upload_last_10800.png
--start
-10800
--height
200
--width
600
--title
Last 3 Hours
--rigid
--upper-limit
1.2e-06
--lower-limit
0
--vertical-label
bps
--imgformat
PNG
--color
SHADEA#ffffff
--color
SHADEB#ffffff
--color
BACK#ffffff
--color
CANVAS#ffffff
DEF:ping1=/var/lib/smokeping/Speedtest/Upload.rrd:ping1:AVERAGE
DEF:ping2=/var/lib/smokeping/Speedtest/Upload.rrd:ping2:AVERAGE
DEF:ping3=/var/lib/smokeping/Speedtest/Upload.rrd:ping3:AVERAGE
CDEF:cp1=ping1,1.2e-06,LT,ping1,INF,IF
CDEF:cp2=ping2,1.2e-06,LT,ping2,INF,IF
CDEF:cp3=ping3,1.2e-06,LT,ping3,INF,IF
DEF:loss=/var/lib/smokeping/Speedtest/Upload.rrd:loss:AVERAGE
CDEF:smoke1=cp1,UN,UNKN,cp3,cp1,-,IF
AREA:cp1
STACK:smoke1#717171
DEF:median=/var/lib/smokeping/Speedtest/Upload.rrd:median:AVERAGE
CDEF:ploss=loss,3,/,100,*
VDEF:avmed=median,AVERAGE
CDEF:mesd=median,POP,avmed,0,/
GPRINT:avmed:median rtt\: %.1lf %ss avg
GPRINT:median:MAX:%.1lf %ss max
GPRINT:median:MIN:%.1lf %ss min
GPRINT:median:LAST:%.1lf %ss now
COMMENT:0.0 ms sd
GPRINT:mesd:AVERAGE:%.1lf %s am/s\l
LINE1:median#202020
GPRINT:ploss:AVERAGE:packet loss\: %.2lf %% avg
GPRINT:ploss:MAX:%.2lf %% max
GPRINT:ploss:MIN:%.2lf %% min
GPRINT:ploss:LAST:%.2lf %% now\l
COMMENT:loss color\:
CDEF:me0=loss,-1,GT,loss,0,LE,*,1,UNKN,IF,median,*
CDEF:meL0=me0,6e-09,-
CDEF:meH0=me0,0,*,6e-09,2,*,+
AREA:meL0
STACK:meH0#26ff00:0
CDEF:me1=loss,0,GT,loss,1,LE,*,1,UNKN,IF,median,*
CDEF:meL1=me1,6e-09,-
CDEF:meH1=me1,0,*,6e-09,2,*,+
AREA:meL1
STACK:meH1#dd00ff:1/3
CDEF:me2=loss,1,GT,loss,2,LE,*,1,UNKN,IF,median,*
CDEF:meL2=me2,6e-09,-
CDEF:meH2=me2,0,*,6e-09,2,*,+
AREA:meL2
STACK:meH2#ff0000:2/3
COMMENT: \l
HRULE:0#000000
COMMENT:probe\: 3 speedtest.net download/upload speeds every 3600s
COMMENT:end\: Tue Sep 29 09\:21\:11 2020\j