aggregate ‘QPainterPath path’ has incomplete type and cannot be defined

[andimik]

I cannot compile it due to this error:

vol/volumemeter.cpp: In member function ‘void Volumemeter::paintBar()’:
vol/volumemeter.cpp:150:19: error: aggregate ‘QPainterPath path’ has incomplete type and cannot be defined
  150 |      QPainterPath path;
      |                   ^~~~