Android : LinearLayout gives an error

iHello there,

I have an problem. I was trying to create an app, but I get an error and I really have no idea how to fix it. It gives a red cross before EditText, and I think it has to do with how everything is opened/closed, but I just can't find a problem.

<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="horizontal" 



<EditText
    android:id="@+id/edit_message"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:hint="@string/edit_message" />

<Button
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="@string/button_send" />



/>

Would like to hear from you.

Greets