Fix: Replace f-string with string concatenation to avoid .format() conflict

code/cube3d/render/render_bricks_safe.py

@@ -339,7 +339,7 @@ class MockOperator:
             level_str = ','.join(level)
         else:
             level_str = str(level)
-        print(f"[ImportLDraw {level_str}] {{message}}")
+        print("[ImportLDraw " + level_str + "] " + message)
 
 try:
     plugin_path = Path(ImportLDraw.__file__).parent