max_force = max( ValueError: max() arg is an empty sequence in anastruct

[pchandu587]

results = combination.solve(ss)
for k, ss in results.items():
results1[k].show_reaction_force(show=True)

When i used load comination it show error.

File "E:/main/fem_analysis/t_profile.py", line 66, in t_profile_loads
#results1[k].show_displacement(show=True)

File "E:\fem_model\fem\system.py", line 910, in show_reaction_force
return self.plotter.reaction_force(figsize, verbosity, scale, offset, show)
File "E:\fem_model\fem\plotter\mpl.py", line 669, in reaction_force
max_force = max(
ValueError: max() arg is an empty sequence

[ritchie46]

See #51