Nim: Cannot debug anymore

Steps to reproduce:

• start QC with enabled Nim plugin
• make sure you have a kit configured with a nim compiler set
  • the kit already contains an error regarding different ABIs of the configured compilers
• create Nim application from template
• build it & start debugging
  • build works, but when trying to start to debug Application output pane prints an error of

    Unable to create a debugging engine. Please select a Debugger Setting from the Run page of the project mode.