AttributeError: 'Clade' object has no attribute 'fc'

When I try to visualize my phylogenetic tree with annotation file, I got this error. Did anyone encounter before?
Traceback (most recent call last):
File “/mnt/rstor/CSE_CSDS_VXC204/rxl761/miniconda/envs/graphlan/bin/graphlan.py”, line 79, in
reorder_tree=args[‘avoid_reordering’])
File “/mnt/rstor/CSE_CSDS_VXC204/rxl761/miniconda/envs/graphlan/bin/graphlan_lib.py”, line 947, in draw
self.set_wings()
File “/mnt/rstor/CSE_CSDS_VXC204/rxl761/miniconda/envs/graphlan/bin/graphlan_lib.py”, line 855, in set_wings
set_wings_rec( self.tree.root )
File “/mnt/rstor/CSE_CSDS_VXC204/rxl761/miniconda/envs/graphlan/bin/graphlan_lib.py”, line 775, in set_wings_rec
f, t = clade.fc.theta, clade.fc.pc.theta if clade.fc.pc else clade.fc.nc.theta
AttributeError: ‘Clade’ object has no attribute ‘fc’