Database missing extensions:tym_system_time,quantile orange widget error

I'm working with the orange data mining tool. In most of the examples data taken from files or google sheets links but in the blog link they given that we can take data from postgresql database tables also but when follow the steps of blog I'm getting error.I attached the screen shots of error.

I need help in solving this error.

Topic orange

Category Data Science

1
answered at

This is not really a proper place to ask questions about software issues, but rather about data mining concepts.

However, I'll answer your question. Your database is missing both extensions as specified in the error message. Here are some brief instructions.

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