fix: NPE 방지코드 추가

pav-server/src/main/java/com/palnet/biz/jpa/repository/pty/PtyCstmrQueryRepository.java

@@ -238,6 +238,8 @@ public class PtyCstmrQueryRepository {
                 .where(builder)
                 .fetchFirst();
 
+        if (entity != null) {
+
             PtyCstmrDtl dtlEntity = query.select(dtl)
                     .from(dtl)
                     .where(dtl.cstmrSno.eq(entity.getCstmrSno()))
@@ -255,8 +257,6 @@ public class PtyCstmrQueryRepository {
                         .fetch();
             }
 
-
-        if (entity != null) {
             JwtUserModel model = new JwtUserModel();
             model.setAuth(entity.getAuthId());
             model.setUserId(entity.getUserId());
@@ -281,8 +281,6 @@ public class PtyCstmrQueryRepository {
         } else {
             return null;
         }
-
-
     }
 
     /**