I just new create a project only have a command open browser , but in console it was showed message “Caught: java.io.IOException: Invalid argument” ( attach image)
please, help me
Is it giving you an error in the log when you run it ?
Do you have this line ?
import com.kms.katalon.core.webui.keyword.WebUiBuiltInKeywords as WebUI
Oh didnt even see that was script mode - yeah just hit - Cntrl+Shift+O - so any missing classes are imported
WebUI is not imported in this way, because it’s an alias 
I didn’t understand in the last version katalon when i change location when i created projected i will meet erro there. if i didn’t change location , i can run normal project.
i got the same error and don’t know how to fix
do you name your project name as unicode character?