"NameError: name 'add_dummy' is not defined"

Created by: NeVo1

I'm getting the "NameError: name 'add_dummy' is not defined" when trying to enable Sverchok for the first time. If I try to enable again I get the "NameError: name 'nodes' is not defined". Restarting blender repeats the process.

I'm using blender 2.93.0 and sverchok 0.6.0.0, installed from latest Sverchok-master.zip Does anyone know how to fix this? Any help is appreciated.

First error trace:

Traceback (most recent call last):
  File "C:\Program Files\Blender Foundation\Blender 2.93\2.93\scripts\modules\addon_utils.py", line 351, in enable
    mod = __import__(module_name)
  File "C:\Users\Me\AppData\Roaming\Blender Foundation\Blender\2.93\scripts\addons\sverchok-master\__init__.py", line 76, in <module>
    node_list = make_node_list(nodes)
  File "C:\Users\Me\AppData\Roaming\Blender Foundation\Blender\2.93\scripts\addons\sverchok-master\core\__init__.py", line 60, in make_node_list
    import_modules(names, '{}.{}'.format(base_name, category), node_list)
  File "C:\Users\Me\AppData\Roaming\Blender Foundation\Blender\2.93\scripts\addons\sverchok-master\core\__init__.py", line 66, in import_modules
    im = importlib.import_module('.{}'.format(m), base)
  File "C:\Program Files\Blender Foundation\Blender 2.93\2.93\python\lib\importlib\__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "C:\Users\Me\AppData\Roaming\Blender Foundation\Blender\2.93\scripts\addons\sverchok-master\nodes\curve\intersect_curves.py", line 23, in <module>
    add_dummy('SvIntersectNurbsCurvesNode', "Intersect Curves", 'FreeCAD or scipy')
NameError: name 'add_dummy' is not defined

Second error trace:

Traceback (most recent call last):
  File "C:\Program Files\Blender Foundation\Blender 2.93\2.93\scripts\modules\addon_utils.py", line 351, in enable
    mod = __import__(module_name)
  File "C:\Users\Me\AppData\Roaming\Blender Foundation\Blender\2.93\scripts\addons\sverchok-master\__init__.py", line 76, in <module>
    node_list = make_node_list(nodes)
NameError: name 'nodes' is not defined

Sverchok version

Version 0.6.0.0 - installed from sverchok-master.zip