my watch gives an error when i try to download music from spotify to my watch, what can i do about it? at first it worked perfectly.

Hi Annebvermeer,

Thank you for posting in Apple Support Communities! Since noticing this, has your Apple Watch been restarted? Restarting can help resolve many different issue we may face with our devices. To restart your Apple Watch, press and hold the side button until you see the Power Off slider.Drag the Power Off slider.After your watch turns off, press and hold the side button again until you see the Apple logo to turn it back on.

Once on, test to see if this continues.

Restart your Apple Watch - Apple Support

Be sure to restart your companion iPhone and check for any software updates since needing an update can cause unexpected issues.

Restart your iPhone - Apple Support

To restart your iPhone, press and hold either volume button and the side button until the power off slider appears. Drag the slider and wait about 30 seconds. Press and hold the side button until the Apple logo appears to power it back on. Once back on, test to see if this continues.

To check for software updates on your iPhone for iOS , you can go to Settings > General > Software Updates. For the watchOS, go to the Watch app > General > Software Updates.

Update your iPhone, iPad, or iPod touch - Apple Support

Update your Apple Watch - Apple Support

Also, be sure to update your apps. Updating the iOS app will also update the watchOS app. You can go to the App Store, tap on your profile in the top right, scroll down to the app updates and select to install them.

How to manually update apps on your Apple device - Apple Support

Hope that helps!