Basic MATCH query errors out '500 Internal Server Error'

[porscheme]

Nebula Version: v3.2.0
My below mentioned basic MATCH query always erroring out with '500 Internal Server Error'.
How can I trouble shoot issues with my MATCH query?

@wey-gu & @Sophie-Xie any help is much appreciated.
Thanks

Statistics:

CourseTcode: 147255
Student: 71 Million
COUSE_TCODE_HAS_STUDENT: 821253207

Match Query

 MATCH (t:CourseTcode)-[e:COUSE_TCODE_HAS_STUDENT]->(p:Student)
 WHERE t.CourseTcode.codeConceptId in [925, 1125, 1325, 1925, 2325]
 return DISTINCT p.Student.studentId
 LIMIT 5

Schema

CREATE TAG IF NOT EXISTS Student(studentId string not null, hcs string not null, docInstance string not null);
CREATE TAG IF NOT EXISTS CourseTcode(codeConceptId int);
CREATE EDGE IF NOT EXISTS COUSE_TCODE_HAS_STUDENT();

Indexes

CREATE TAG INDEX IF NOT EXISTS studentid_index ON Student(studentId(20));
CREATE TAG INDEX IF NOT EXISTS course_tcode_index ON CourseTcode(codeConceptId);

[QingZ11]

Please post your service configuration, the problem may be related to your configuration.