Why won't this activity in android studio open?

Question

I attempted to add an animated submit button to one of my activities when my emulator printed "Can't open app". However, the debugging tool didn't detect an error. I'd greatly appreciate if you could help me resolve this issue.

       <com.spark.submitbutton.SubmitButton
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_marginTop="428dp"
        android:text="Support"
        android:textColor="@color/white"
        app:layout_constraintHorizontal_bias="1.0"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:sub_btn_background="@color/white"
        app:sub_btn_duration="3000"
        app:sub_btn_line_color="@drawable/catalyzechangebtn"
        app:sub_btn_ripple_color="@drawable/catalyzechangebtn"
        app:sub_btn_tick_color="@color/black" /> 

For additional context, here's the android manifest code:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.androidcodefinder.loginscreendemo">

    <!-- To auto-complete the email text field in the login form with the user's emails -->
    <uses-permission android:name="android.permission.GET_ACCOUNTS" />
    <uses-permission android:name="android.permission.READ_PROFILE" />
    <uses-permission android:name="android.permission.READ_CONTACTS" />
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_background"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity android:name=".SignUpActivity" />
        <activity android:name=".zippage" />
        <activity android:name=".Catalysts.CatalystsActivity" />
        <activity android:name=".Profile.ProfileActivity" />
        <activity android:name=".Analytics.AnalyticsActivity" />
        <activity android:name=".postpg"/>
    </application>

</manifest> 

Here's a screenshot of the error: