Can not find method tab_plasma_prepare_path

Summary:

I get this message any time I try to prepare path for plasma

Steps to reproduce:

• Open Inkscape
• Draw rectangle
• Object to path
• Select gcodetools -> tools -> choose plasma
• Click Prepare path for Plasma

What happened?

I get the error message "Can not find method tab_plasma_prepare_path" in a box

What should have happened?

It should have created the gcode for my plasma cutter

Version Info:

• Inkscape Version: 1.0 (4035a4fb49, 2020-05-01)
• Operating System: Windows 10
• Operating System version: V 1909 build 18363.900