~ $ canola Xlib: extension "RANDR" missing on display ":0.0". Traceback (most recent call last): File "/usr/bin/canola", line 312, in <module> mc = MainController(ee, os.path.realpath(options.theme)) File "canola-core/main/controller.py", line 272, in __init__ File "canola-core/main/controller.py", line 593, in show_notify AttributeError: 'NoneType' object has no attribute 'view'