arguments did not match any overloaded call:

joao_craveiro

I'm trying to run an eye-tracking experiment on OpenSesame. However, when I try to run my experiment I get the following message:

TypeError: arguments did not match any overloaded call:

 save(self, fileName: Optional[str], format: Optional[str] = None, quality: int = -1): argument 1 has unexpected type 'QBuffer'

 save(self, device: Optional[QIODevice], format: Optional[str] = None, quality: int = -1): argument 1 has unexpected type 'QBuffer'

Running this same experiment in a different computer that has the same exact setup (I copied the virtual environment from one computer to the other) works just fine.

Any suggestions?

sebastiaan

Hi @joao_craveiro ,

Can you post the full traceback (from the console) so that it's clear where the error originates?

— Sebastiaan

otuerk

I am getting the same error. Here is the traceback:

Traceback (most recent call last):
  File "/home/extra-laptop/.local/lib/python3.10/site-packages/opensesame_extensions/core/preload_items/preload_items.py", line 67, in _on_awake
    self._preload_one_item()
  File "/home/extra-laptop/.local/lib/python3.10/site-packages/opensesame_extensions/core/preload_items/preload_items.py", line 82, in _preload_one_item
    item.edit_widget()
  File "/home/extra-laptop/.local/lib/python3.10/site-packages/libqtopensesame/items/feedpad.py", line 73, in edit_widget
    self.sketchpad_widget.draw()
  File "/home/extra-laptop/.local/lib/python3.10/site-packages/libqtopensesame/widgets/sketchpad_widget.py", line 420, in draw
    element.draw()
  File "/home/extra-laptop/.local/lib/python3.10/site-packages/libqtopensesame/sketchpad_elements/_base_element.py", line 70, in draw
    self.graphics_item = super(base_element, self).draw()
  File "/home/extra-laptop/.local/lib/python3.10/site-packages/libopensesame/sketchpad_elements/_textline.py", line 53, in draw
    return self.canvas.text(properties[u'text'],
  File "/home/extra-laptop/.local/lib/python3.10/site-packages/libqtopensesame/misc/sketchpad_canvas.py", line 623, in text
    im = t._to_pil()
  File "/home/extra-laptop/.local/lib/python3.10/site-packages/openexp/_canvas/_richtext/richtext.py", line 243, in _to_pil
    im = self._qimage_to_pil(self._to_qimage())
  File "/home/extra-laptop/.local/lib/python3.10/site-packages/openexp/_canvas/_richtext/richtext.py", line 223, in _qimage_to_pil
    return Image.fromqimage(self._to_qimage())
  File "/home/extra-laptop/.local/lib/python3.10/site-packages/PIL/Image.py", line 3164, in fromqimage
    return ImageQt.fromqimage(im)
  File "/home/extra-laptop/.local/lib/python3.10/site-packages/PIL/ImageQt.py", line 81, in fromqimage
    im.save(buffer, "png")
TypeError: arguments did not match any overloaded call:
  save(self, str, format: str = None, quality: int = -1): argument 1 has unexpected type 'QBuffer'
  save(self, QIODevice, format: str = None, quality: int = -1): argument 1 has unexpected type 'QBuffer'

In my case, it started when I transferred the experiment to a new device (ubuntu) with a fresh opensesame install.

Rafnica

I get the same error while trying to set up an experiment with a tobii eyetracker.

The error occurs when I open opensesame (without actually running anything or opening my experiment).

(Anaconda installation of OpenSesame with python3.10).

The full traceback is the following:

Traceback (most recent call last):

 File "C:\Users\Behav2_Stim\anaconda3\envs\opensesame-py3\lib\site-packages\opensesame_extensions\core\preload_items\preload_items.py", line 67, in _on_awake

  self._preload_one_item()

 File "C:\Users\Behav2_Stim\anaconda3\envs\opensesame-py3\lib\site-packages\opensesame_extensions\core\preload_items\preload_items.py", line 82, in _preload_one_item

  item.edit_widget()

 File "C:\Users\Behav2_Stim\anaconda3\envs\opensesame-py3\lib\site-packages\libqtopensesame\items\feedpad.py", line 73, in edit_widget

  self.sketchpad_widget.draw()

 File "C:\Users\Behav2_Stim\anaconda3\envs\opensesame-py3\lib\site-packages\libqtopensesame\widgets\sketchpad_widget.py", line 420, in draw

  element.draw()

 File "C:\Users\Behav2_Stim\anaconda3\envs\opensesame-py3\lib\site-packages\libqtopensesame\sketchpad_elements\_base_element.py", line 70, in draw

  self.graphics_item = super(base_element, self).draw()

 File "C:\Users\Behav2_Stim\anaconda3\envs\opensesame-py3\lib\site-packages\libopensesame\sketchpad_elements\_textline.py", line 53, in draw

  return self.canvas.text(properties[u'text'],

 File "C:\Users\Behav2_Stim\anaconda3\envs\opensesame-py3\lib\site-packages\libqtopensesame\misc\sketchpad_canvas.py", line 623, in text

  im = t._to_pil()

 File "C:\Users\Behav2_Stim\anaconda3\envs\opensesame-py3\lib\site-packages\openexp\_canvas\_richtext\richtext.py", line 243, in _to_pil

  im = self._qimage_to_pil(self._to_qimage())

 File "C:\Users\Behav2_Stim\anaconda3\envs\opensesame-py3\lib\site-packages\openexp\_canvas\_richtext\richtext.py", line 223, in _qimage_to_pil

  return Image.fromqimage(self._to_qimage())

 File "C:\Users\Behav2_Stim\anaconda3\envs\opensesame-py3\lib\site-packages\PIL\Image.py", line 3164, in fromqimage

  return ImageQt.fromqimage(im)

 File "C:\Users\Behav2_Stim\anaconda3\envs\opensesame-py3\lib\site-packages\PIL\ImageQt.py", line 81, in fromqimage

  im.save(buffer, "png")

TypeError: arguments did not match any overloaded call:

 save(self, fileName: Optional[str], format: Optional[str] = None, quality: int = -1): argument 1 has unexpected type 'QBuffer'

 save(self, device: Optional[QIODevice], format: Optional[str] = None, quality: int = -1): argument 1 has unexpected type 'QBuffer'

According to chatgpt the problem is the following:

"The error message you're seeing is related to the PIL (Python Imaging Library) and PyQt integration, specifically when trying to convert a QImage to a PIL.Image object. The problem arises when the save method is called with a QBuffer object, which the save method does not expect.".

Unfortunately, I'm not sure how to solve it without trying to change the code that is being called from the scripts. I tried to update the PIL and pyqt5 packages, but that did not solve the problem.

sebastiaan

I'm not entirely sure where this comes from, but it seems to be an incompatibility between PIL and PyQt. Can you check which versions your are running of PyQt, Pillow, and OpenSesame?

from PyQt5.QtCore import PYQT_VERSION_STR, QT_VERSION_STR; print(PYQT_VERSION_STR, QT_VERSION_STR)
import PIL; print(PIL.__version__)
from libopensesame.metadata import __version__; print(__version__)

Rafnica

PyQT: 5.15.10

QT: 5.15.2

Pillow: 10.3.0

OpenSesame: 4.0.27

MDJ

Hi there,

Was this issue ever resolved? I am encountering a similar problem.

Matthew