Plater does not show the open object
It does not appear on the desktop when the object is opened. Everything works but the program prints this error: G-Code plate function activated Plate function activated Connecting ...
Grbl 1.1h ['$' for help] Printer is now online. error: 20
If you open a gcode file in Pronterface and select Tools->G-Code Plater, the plater does not load the file from pronterface. Use the Load button of the gcode plater to load (copies of) the needed models, then export and load the exported file in pronterface. If you use gcode plater's load button and nothing is displayed then upload the file.
error 20 is from the connected grbl board and is probably caused by the temperature command M105 which pronterface sends periodically. Enable verbose logging by sending this command '!self.p.loud=True' to see which command causes the error.
I am a complete novice in this field. I tried to follow your advice and no result. I'm creating my projects in Inkscape and there will probably be the problem. The extension of the exported project is * .ngc.
There was recently a fix for Inkscape files #1090 You have to clone/download the latest master branch and run it from source, see build instructions on the main page.