CPM Blockbench plugin, error when saving #925

Error while exporting:
TypeError: Cannot read properties of undefined (reading 'i')
at ywc (PLUGINS/(Plugin):cpm_plugin.js:2860:1317)
at new com.tom.cpm.shared.editor.Editor.drawPixel$lambda(Editor.java:338) (PLUGINS/(Plugin):cpm_plugin.js:2936:16)
at com.tom.cpm.blockbench.convert.ProjectConvert.compile(ProjectConvert.java:36) (PLUGINS/(Plugin):cpm_plugin.js:2000:140)
at com.tom.cpm.blockbench.convert.ProjectConvert.parse$lambda$lambda$lambda(ProjectConvert.java:94) (PLUGINS/(Plugin):cpm_plugin.js:2001:62)
at com.tom.cpm.blockbench.format.CPMCodec.init$lambda(CPMCodec.java:60) (PLUGINS/(Plugin):cpm_plugin.js:2155:52)
at com.google.gwt.dev.jjs.intrinsic.com.google.gwt.lang.Runtime(Runtime.java:206) (PLUGINS/(Plugin):cpm_plugin.js:18:47)
at RA.callback (file:///C:/Users/Nahuel/AppData/Local/Programs/Blockbench/resources/app.asar/dist/bundle.js:4351:15542)
at RA.close (file:///C:/Users/Nahuel/AppData/Local/Programs/Blockbench/resources/app.asar/dist/bundle.js:3444:16032)
at HTMLLIElement. (file:///C:/Users/Nahuel/AppData/Local/Programs/Blockbench/resources/app.asar/dist/bundle.js:3444:17602)
Platform: undefined