سلام عليكم عمد التنصيب جاءتني المعلومة التالية انا استفسر مامعناها

The PBBoard Requirements check failed due to the reasons below. PBBoard installation cannot continue because you did not meet the PBBoard requirements. Please correct the errors below and try again:

• PBBoard requires one or more suitable database extensions to be installed. Your server reported that none were available.