Add check for null ChromeDriver on app start
Add check for null ChromeDriver on app start

gaieepo/HubTurbo,saav/HubTurbo,Sumei1009/HubTurbo,Sumei1009/HubTurbo,saav/HubTurbo,HyungJon/HubTurbo,HyungJon/HubTurbo,Honoo/HubTurbo,Honoo/HubTurbo,gaieepo/HubTurbo,ianngiaw/HubTurbo,ianngiaw/HubTurbo