"declared at" part is empty

[skogsbaer]

Code:

from wypp import *

@record
class Course:
    name: str
    teacher: str
    students: tuple[str, ...]

@record(mutable=True)
class CourseM:
    name: str
    teacher: str
    students: tuple[str, ...]

@record
class Semester:
    degreeProgram: str
    semester: str
    courses: tuple[CourseM, ...]

prog1 = Course('Programmierung 1', 'Wehr', ())
semester1_2020 = Semester('AKI', '1. Semester 2020/21', (prog1, ))

Error:

untypy.error.UntypyTypeError
given:    Course(name='Programmierung 1', teacher='Wehr', students=())
expected: value of type CourseM

context: Semester(degreeProgram: str, semester: str, courses: tuple[CourseM, ...]) -> Self
                                                                    ^^^^^^^
declared at:

caused by: test.py:22
 22 | semester1_2020 = Semester('AKI', '1. Semester 2020/21', (prog1, ))

The error is correct, but the "declared at" part is missing.

[CodeSteak]

Duplicate of #13.
Fixed by #22

[skogsbaer]

Yeah!