[Python] Cannot find an embed for this URL

I'm working on a Wagtail project and trying to add embedded videos (from Vimeo) to my home page using EmbedBlock. However, I'm unable to embed any video links through the Wagtail admin. I’ve tried embedding videos in EmbedBlock, RichTextField and URLField, but none of them work.

I don’t get any specific error messages—just: Cannot find embed for this URL and The page could not be saved due to validation errors

Has anyone experienced this or know how to fix it? Any help would be appreciated! Thanks!

here is my models.py:

from wagtail import blocks
from wagtail.models import Page
from wagtail.fields import RichTextField, StreamField
from wagtail.admin.panels import FieldPanel
from wagtail.images.blocks import ImageChooserBlock
from wagtail.embeds.blocks import EmbedBlock

class ImageAndEmbedBlock(blocks.StreamBlock):
image = ImageChooserBlock(required=False)
video = EmbedBlock(required=False)

class Meta: # noqa
label = "Media"


class HomePage(Page):
body = RichTextField(blank=True)
carousel = StreamField(ImageAndEmbedBlock(), null=True, blank=True)

content_panels = Page.content_panels + [FieldPanel("body"), FieldPanel("carousel")]


I tried adding this to the settings but it made no difference:

# commented out the import because it did not work neither
# from wagtail.embeds.oembed_providers import vimeo

vimeo = {
"endpoint": "https://www.vimeo.com/api/oembed.{format}",
"urls": [
r"^https?://(?:www\.)?vimeo\.com/.+$",
r"^https?://player\.vimeo\.com/.+$",
],
}

WAGTAILEMBEDS_FINDERS = [
{
"class": "wagtail.embeds.finders.oembed",
"providers": [vimeo],
}
]

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