fix

src/modules/compat.ts

@@ -8,6 +8,9 @@ import { rcRegexp, rollRegexp } from '../utility/constant';
 export class CompatModule extends BaseModule {
   @UseMiddleware()
   onRollCompat(session: Session, next: Next) {
+    if (!session.parsed) {
+      return next();
+    }
     const { content, prefix } = session.parsed;
     if (!prefix || content[0] !== 'r') return next();
     const expr = content.slice(1);