Traceback (most recent call last):


 "test.py", line 18, in <module>

class explain(CoerceTextStatementRole, Executable, ClauseElement):
TypeError: Cannot create a consistent method resolution

Traceback (most recent call last):


 "/usr/lib/python3.9/site-packages/matplotlib/backends/backend_gtk3.py", line 40, in <module>

cursors.MOVE:
Gdk.Cursor.new(Gdk.CursorType.FLEUR),
TypeError: constructor returned NULL
