pls help - half shattered pc case side panel

nahalf shatter yung side panel ng pc ko suddenly, i didnt know na full on glass siya it looked and felt like plastic for the past 2 years. what can i do here?

nasira siya while i was trying to check my motherboard, ganyan na siya nung nakadettach na pero tinry ko lang ilagay ulit na parang walang nangyari. im not sure kung safe ba to o kung ano pwede gawin