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An element exist in web but it turns out to be null when I scrape it. How could I solve it?

I am scraping a dynamic web which applied JS and react function on it (a blockchain explorer). I attempted to build a program which supposed to be able to scrape with JS running. However, it return me with result null for the element I am looking for. When I double check the element in source code via Chrome, the element exist with value. Why does that happened? What could I do to solve the issue?
(By the way, I tried to find the element by class name, css selector, and Xpath as well, but still, not working)