Encoutered an error while opening isar db inspector link

Question

I want to open isar inspector link but i'm getting an error.

How i opened isar:

  Future<Isar> openDB() async {
    if (Isar.instanceNames.isEmpty) 

{
      return await Isar.open(
        [CourseSchema, StudentSchema, TeacherSchema],
        inspector: true,
      );
    }``
    return Future.value(Isar.getInstance());
  }

This is the error: [ERROR:flutter/runtime/dart_vm_initializer.cc(41)] Unhandled Exception: IsarError: Cannot open Environment: MdbxError (75): Value too large for defined data type `