It is missing the parameters for the actual device/port?

rrdtool graph /tmp/DxZU575puzErhzJM.png -g --alt-autoscale --rigid --start 1438590906 --end 1438677306 --width 1159 --height 300 -c BACK#EEEEEE00 -c SHADEA#EEEEEE00 -c SHADEB#EEEEEE00 -c FONT#000000 -c CANVAS#FFFFFF00 -c GRID#a5a5a5 -c MGRID#FF9999 -c FRAME#5e5e5e -c ARROW#5e5e5e -R normal --font LEGEND:8:'DejaVuSansMono' --font AXIS:7:'DejaVuSansMono' --font-render-mode normal -E CDEF:inB= CDEF:outB= CDEF:octets=inB,outB,+ CDEF:doutB=outB,-1,* CDEF:inbits=inB,8,* CDEF:outbits=outB,8,* CDEF:bits=inbits,outbits,+ CDEF:doutbits=doutB,8,* VDEF:95thin=inbits,95,PERCENT VDEF:95thout=outbits,95,PERCENT VDEF:d95thout=doutbits,5,PERCENT VDEF:totin=inB,TOTAL VDEF:avein=inbits,AVERAGE VDEF:totout=outB,TOTAL VDEF:aveout=outbits,AVERAGE VDEF:tot=octets,TOTAL COMMENT:' \l' HRULE:999999999999999#FFFFFF:'Total Rx': GPRINT:inbits:LAST:%6.2lf%s GPRINT:inbits:AVERAGE:%6.2lf%s GPRINT:inbits:MIN:%6.2lf%s GPRINT:inbits:MAX:%6.2lf%s GPRINT:totin:%6.2lf%sB COMMENT:'\l' HRULE:999999999999999#FFFFFF:' Tx': GPRINT:outbits:LAST:%6.2lf%s GPRINT:outbits:AVERAGE:%6.2lf%s GPRINT:outbits:MIN:%6.2lf%s GPRINT:outbits:MAX:%6.2lf%s GPRINT:totout:%6.2lf%sB COMMENT:'\l' HRULE:999999999999999#FFFFFF:' Agg': GPRINT:bits:LAST:%6.2lf%s GPRINT:bits:AVERAGE:%6.2lf%s GPRINT:bits:MIN:%6.2lf%s GPRINT:bits:MAX:%6.2lf%s GPRINT:tot:%6.2lf%sB COMMENT:'\l' HRULE:0#999999