create_students_table migration fails

I have created two tables one for student and another for department. The student table has foreign key department_id:

public function up(): void
    {
        Schema::create('students', function (Blueprint $table) {
            $table->id('student_id');
            $table->string('name');
            $table->string('email');
            $table->string('contact',11);
            $table->unsignedBigInteger('department_id');
            $table->foreign('department_id')->references('department_id')->on('departments');
            $table->timestamps();
        });
    }

department table is as follows:

 public function up(): void
    {
        Schema::create('departments', function (Blueprint $table) {
            $table->id('department_id');
            $table->string('name',255);
            $table->timestamps();
        });
    }

Running migration gives error :

SQLSTATE[42S01]: Base table or view already exists: 1050 Table 'students' already exists (Connection: mysql, SQL: create table `students` (`student_id` bigint unsigned not null auto_increment primary key, `name` varchar(255) not null, `email` varchar(255) not null, `contact` varchar(11) not null, `department_id` bigint unsigned not null, `created_at` timestamp null, `updated_at` timestamp null)