Error on build at 66%

I am getting an error on rig build.

From the script editor:

building controls Head

building Head controls

# Traceback (most recent call last):

# File "C:\ProgramData/Autodesk/ApplicationPlugins\rrm3\Contents\scripts\gui\main_tabs_generate_rig.py", line 170, in <lambda>

# generate_rig_button.clicked.connect(lambda *args: self.build_rig())

# File "C:\ProgramData/Autodesk/ApplicationPlugins\rrm3\Contents\scripts\gui\main_tabs_generate_rig.py", line 217, in build_rig

# rig_build_success = _build_rig.build_rig(rig_data_obj)

# File "C:\ProgramData/Autodesk/ApplicationPlugins\rrm3\Contents\scripts\control_rig\_build_rig.py", line 177, in build_rig

# module.build(controls=True)

# File "C:\ProgramData/Autodesk/ApplicationPlugins\rrm3\Contents\scripts\control_rig\build_modules\_build_module.py", line 119, in build

# self.build_side(start_nodes=start_nodes, joints=joints, controls=controls)

# File "C:\ProgramData/Autodesk/ApplicationPlugins\rrm3\Contents\scripts\control_rig\build_modules\build_head.py", line 142, in build_side

# self.build_ctrls()

# File "C:\ProgramData/Autodesk/ApplicationPlugins\rrm3\Contents\scripts\control_rig\build_modules\build_head.py", line 414, in build_ctrls

# self.build_laugh_line_ctrls(face_side, mouth_ctrl)

# File "C:\ProgramData/Autodesk/ApplicationPlugins\rrm3\Contents\scripts\control_rig\build_modules\build_head.py", line 2267, in build_laugh_line_ctrls

# upper_target = self.laugh_line_upper_targets[face_side]

# KeyError: 'left_'

I don't think I had laugh lines enabled.

Any help is appreciated.