Looping error

maaf sebelumnya ini gimana ya gan? ini kodenya

<div class="content-wrapper">
    <section class="content">
        <?php foreach ($mahasiswa as $mhs) : ?>
            <form action="<?= base_url() ?>/mahasiswa/update" method="post">
                <div class="form-group">
                    <label for="nama">Nama</label>
                    <input type="hidden" name="id" class=" form-control" value="<?= $mhs['id'] ?>">
                    <input type="text" name="nama" class=" form-control" value="<?= $mhs['nama'] ?>">
                </div>
                <div class="form-group">
                    <label for="nim">Nim</label>
                    <input type="number" name="nim" class=" form-control" value="<?= $mhs['nim'] ?>">
                </div>
                <div class="form-group">
                    <label for="tgl_lahir">Tanggal Lahir</label>
                    <input type="date" name="tgl_lahir" class=" form-control" value="<?= $mhs['tgl_lahir'] ?>">
                </div>
                <div class="form-group">
                    <label for="jurusan">Jurusan</label>
                    <input type="text" name="jurusan" class=" form-control" value="<?= $mhs['jurusan'] ?>">
                </div>
                <button type="reset" class="btn- btn-danger"></button>
                <button type="submit" class="btn- btn-primary"></button>
            </form>
        <?php endforeach; ?>
    </section>
</div>

ini gambarnya