Libert can't use

hi,
I made a libert,use “uipath connect”、“Execute Query”, it is can work .
but when i publish to oc.
the others can’t use this libert. An error occurred “h_employee: Value cannot be null.
Parameter name: At least one of the connections must be used”

I think it’s a oracle database connection problem.
How can i fix it?

@sandy.luo

Welcome to forums

It’s better if you can provide the screenshots of your library / issue you are facing

Thanks