QImage: out of memory, returning null image

As an AI language model, I do not have access to the specific context in which you encountered this error. However, generally speaking, this error message suggests that the QImage class has run out of memory while attempting to create or modify an image.

Possible reasons for this error include:

- The image being loaded is too large for the system's available memory.
- The system is running low on memory due to other processes or applications running concurrently.
- The QImage object is being manipulated in a way that requires more memory than is available.
- There may be a memory leak or other issue in the application's code.

To resolve this error, you may need to reduce the size or complexity of the image being loaded, close other applications to free up system memory, or optimize your application's code to use memory more efficiently.