Joldas

Hello, everybody.
I found that bottom of brake pedal and park brake found to be welded, what sign? Accident or else? What should i do. Why such break happens, ? because that metal is usually very hard strong. Lexus es250. Owner doesn't said anything when he sold. But other parts are well kept. Like new, very low mileage. Please see photo, i found it accidentally when i clean the bottom. Cause it is dark, and hindered by plastic covers. Thanks.