Description of problem:
Random crashes ending with the same error message:
Traceback (most recent call last):
  File "/usr/lib/python3.10/site-packages/NanoVNASaver/Charts/Square.py", line 51, in paintEvent
    self.drawValues(qp)
  File "/usr/lib/python3.10/site-packages/NanoVNASaver/Charts/Square.py", line 94, in drawValues
    self.drawMarker(x, y, qp, m.color, self.markers.index(m)+1)
  File "/usr/lib/python3.10/site-packages/NanoVNASaver/Charts/Chart.py", line 310, in drawMarker
    cmarker.draw(x, y, color, f"{number}")
  File "/usr/lib/python3.10/site-packages/NanoVNASaver/Charts/Chart.py", line 93, in draw
    self.qp.drawText(x - text_width // 2, y - 3 - offset, text)
TypeError: arguments did not match any overloaded call:
  drawText(self, Union[QPointF, QPoint], str): argument 1 has unexpected type 'int'
  drawText(self, QRectF, int, str): argument 1 has unexpected type 'int'
  drawText(self, QRect, int, str): argument 1 has unexpected type 'int'
  drawText(self, QRectF, str, option: QTextOption = QTextOption()): argument 1 has unexpected type 'int'
  drawText(self, QPoint, str): argument 1 has unexpected type 'int'
  drawText(self, int, int, int, int, int, str): argument 2 has unexpected type 'float'
  drawText(self, int, int, str): argument 2 has unexpected type 'float'
Aborted (core dumped)

Reported upstream at the 'URL'.