Ive integrated the hosted payment pages (Embed) into our site,
Sorry for the late response.
Our developers tried the same scenario on their end and it worked fine for them.
It would be great if you could confirm a few things for us:
I found that this payment error occurs with my system in this case Mozilla support is also a good option to take help which listens to your problem calmly and give you the correct way to short out this.