Plot PnG of histograms not produced by Madgraph

When running a process in madgraph, no histograms are produced. Everything runs okay and the data for the histogram is outputted but the histogram itself isn't produced. I have tried running both matplotlib and root as the main graphic render but this problem persists with both.

The following commands for madanalysis have been used :

ma5>import /home/sinead/Internship/MG5_aMC_v3_4_0/tuesdaymorn/bin/internal/ufomodel
ma5>import /home/sinead/Internship/MG5_aMC_v3_4_0/tuesdaymorn/Events/run_01_decayed_1/unweighted_events.lhe.gz as run_01_decayed_1
ma5>define vl = 12 14 16
ma5>define vl~ = -16 -14 -12
ma5>define invisible = ve~ ve vm~ vt~ vm vt vl vl~
ma5>set main.graphic_render = matplotlib
ma5>plot THT 40 0 500 [logY]
ma5>plot MET 40 0 500 [logY]
ma5>plot SQRTS 40 0 500 [logY]
ma5>plot PT(t[1]) 40 0 500 [logY]
ma5>plot ETA(t[1]) 40 -10 10 [logY]
ma5>plot PT(t~[1]) 40 0 500 [logY]
ma5>plot ETA(t~[1]) 40 -10 10 [logY]
ma5>plot M(t[1] t~[1]) 40 0 500 [logY ]
ma5>plot DELTAR(t[1],t~[1]) 40 0 10 [logY ]
ma5>submit /home/sinead/Internship/MG5_aMC_v3_4_0/tuesdaymorn/MA5_PARTON_ANALYSIS_analysis1

But do not produce any png's of the histograms