Plugin is not installed Ionic 4

[giuliastully]

Hi, just clicking on the start button to start tracking gives me these errors:

Native: tried calling BackgroundGeolocation.start, but the BackgroundGeolocation plugin is not installed.

Install the BackgroundGeolocation plugin: 'ionic cordova plugin add @mauron85/cordova-plugin-background-geolocation'

The plugin is installed.

What can I do?

[enfix86]

I had same problem problem.
I used the blank starter and I added this plugin, so the project is clean.
I had the plugin using:
ionic cordova plugin add @mauron85/cordova-plugin-background-geolocation
npm install @ionic-native/background-geolocation

Here is my environment:

Ionic CLI : 6.4.0
Ionic Framework : @ionic/angular 5.1.0
@angular-devkit/build-angular : 0.803.26
@angular-devkit/schematics : 8.3.26
@angular/cli : 8.3.26
@ionic/angular-toolkit : 2.2.0

Cordova:

Cordova CLI : 7.0.1
Cordova Platforms : android 8.1.0
Cordova Plugins : cordova-plugin-ionic-keyboard 2.2.0, cordova-plugin-ionic-webview 4.2.1, (and 5 other plugins)

How can I solve it?

[tSlappy]

I have the same problem.

It looks like there is some conflict in node_modules@ionic-native\background-geolocation
because when I search that directory I find reference to cordova-plugin-mauron85-background-geolocation plugin which is now obsolete (should be @mauron85/cordova-plugin-background-geolocation )

See danielsogl/awesome-cordova-plugins#3203

@mauron85 Mozes poradit co je zle?

[busaku]

I cant install it on cordova (android) too.

[SergioZhydecky]

i can install, but build issue looks like conflict with firebase-x plugin. But I'm not sure