建立新項目，運行python?manage.py?runserver之后報錯，內容如下，求解，Django版本2.2.4Watching?for?file?changes?with?StatReloader Performing?system?checks... System?check?identified?no?issues?(0?silenced). You?have?17?unapplied?migration(s).?Your?project?may?not?work?properly?until?you?apply?the?migrations?for?app(s):?admin,?auth,?contenttypes,?sessions. Run?'python?manage.py?migrate'?to?apply?them.