It is no longer possible for you to get a replacement BRP because UK Visas and Immigration stopped the production of BRP cards since October 2024. If there is an error in the length of your leave or details, then you should first create an eVisa account and then report the error on your eVisa once you receive confirmation your account has been linked by UKVI. You can do this on the gov.uk website.
In the first instance, you may want to get in touch with the International Student Advice Service for clarity on if there is an error on your leave.