Problem notifier: background and text are white

[Zagal]

HI.
Same problem here when my phone was updated to Android 12. No changes in the app, but the notifications background turned white so the notifications can’t be seen because the text is also white.

Notifications background color changed to white with Android 12

Hi. My app has several notification component. All of them have the same settings: [imagen] After my phone (where my app is instaled) have benn updated to Android 12, this notifications appears with white background, so the notifications can’t be read. Why is this happening? How can I solve this quick, because the app is published in Google App Store. Thanks in advance!