Log instead of panicking when closing the browser

[inancgumus]

The closing the browser panics even if the previous code already panicked and closed the browser.

One of the solutions is to log if we can't close the browser—instead of panic.

As shown in the #814 script, you can see that the current approach (panicking while closing the browser) creates problems.

• The code in the try block panics, and catch will silence it, and the finally closes the browser.
• Since the code panicked, the browser is killed. Another browser.close will cause another panic.

[inancgumus]

We decided to keep this in the backlog until it becomes necessary to tackle.