Error opening PDF file with fileOpener2 in Ionic 3

I am trying to open a PDF file in my Ionic application and get the following error:

Error opening file Attempt to invoke virtual method ‘android.content.res.XmlResourceParser android.content.pm.ProviderInfo.loadXmlMetaData(android.content.pm.PackageManager, java.lang.String)’ on a null object reference

What the application does is that it receives a file in base64 format, transforms it to BLOB and then downloads it to the application directory, until this process all goes perfectly, this is the path it writes the file:

file:///data/user/0/io.ionic.starter/files/Informativo%202019_10_20%20e%2021

Then you run File Opener to open and the error pops:

this.file.writeFile(this.file.dataDirectory, fileName, DataBlob, contentType).then((success) => {  
        console.log("File Writed Successfully", success);
        //Method showing error below
        this.fileOpener.open(success.toURL(), this.contentType)
            .then(() => console.log('File is opened'))
            .catch(e => console.log('Error opening file', e));
    }).catch((err) => {  
        console.log("Error Occured While Writing File", err);
    });

I also have this file that I saw in other similar questions: opener_paths.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- https://developer.android.com/reference/android/support/v4/content/FileProvider.html#SpecifyFiles -->
<paths xmlns:android="http://schemas.android.com/apk/res/android">
    <!-- cordova.file.dataDirectory -->
    <files-path name="files" path="." />
    <!-- cordova.file.cacheDirectory -->
    <cache-path name="cache" path="." />
    <!-- cordova.file.externalDataDirectory -->
    <external-files-path name="external-files" path="." />
    <!-- cordova.file.externalCacheDirectory -->
    <external-cache-path name="external-cache" path="." />
    <!-- cordova.file.externalRootDirectory -->
    <external-path name="external" path="." />
</paths>

My AndroidManifest.xml:

<?xml version='1.0' encoding='utf-8'?>
<manifest android:hardwareAccelerated="true" android:versionCode="1" android:versionName="0.0.1" package="io.ionic.starter" xmlns:android="http://schemas.android.com/apk/res/android">
    <supports-screens android:anyDensity="true" android:largeScreens="true" android:normalScreens="true" android:resizeable="true" android:smallScreens="true" android:xlargeScreens="true" />
    <uses-permission android:name="android.permission.INTERNET" />
    <application android:hardwareAccelerated="true" android:icon="@mipmap/icon" android:label="@string/app_name" android:networkSecurityConfig="@xml/network_security_config" android:supportsRtl="true">
        <activity android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale" android:label="@string/activity_name" android:launchMode="singleTop" android:name="MainActivity" android:theme="@android:style/Theme.DeviceDefault.NoActionBar" android:windowSoftInputMode="adjustResize">
            <intent-filter android:label="@string/launcher_name">
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>
    <uses-sdk android:minSdkVersion="19" android:targetSdkVersion="26" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
</manifest>