pythoncom -2147417846, 'The message filter indicated that the application is busy

@sercan_0900 the only thing that I can think is maybe was Photoshop was currently processing another task and was unable to respond to your Python script's request. This could be due to a number of reasons, such as a complex operation being performed, a large file being loaded, or the application being unresponsive. 

I would either wait it out or restart Photoshop. Better yet, when was the last time your computer was restarted. I seldom turn off my computer, so, this is always what gets me! If that doesnt work, maybe simply the script a bit or the Photoshop file to see where the issue is