This should fix weird behavior in ubuntu when not selecting file

Author: STBrian

main.py

@@ -178,7 +178,7 @@ def changeTextureFunc(self, value):
             if idx < len(supported_extensions)-1:
                 exts_str += " "
         filePath = customtkinter.filedialog.askopenfilename(filetypes=[("Image files", ".jpeg .jpg .gif .png .webp .tiff .tif .bmp .psd .ico"), ("All image files", exts_str)])
-        if filePath != '' and Path(filePath).exists():
+        if filePath != '' and isinstance(filePath, str):
             if not canOpenImage(filePath):
                 messagebox.showerror("Failed to open image", "Unable to open the selected image")
             else: