unable to plot from PROCAR

[nasirxo]

pyband -f PROCAR
Traceback (most recent call last):
File "/home/awkum/SCRIPTS/pyband/pyband", line 710, in
kpath, bands, efermi, kpt_bounds, wkpts = get_bandInfo(opts.filename)
File "/home/awkum/SCRIPTS/pyband/pyband", line 192, in get_bandInfo
B = np.array([line.split()[-3:] for line in outcar[ibasis:ibasis+3]],
UnboundLocalError: local variable 'ibasis' referenced before assignment