I can’t post images to GMB

If there is an image in a WordPress post, it cannot be posted to GMB.
This is the content of the error

Failed to create/update post: Request contains an invalid argument. [‘.(int)3.’]The link you’ve entered is invalid Field: media[0].source_url Value: https://xxx.xxx.xxx.xxx/wp-content/uploads/2021/08/2021-05-02.png