Issue Summary

While it is possible to share a page by clicking on Share button, now it is not being possible to share pages with users by their e-mail addresses.
It also is impacting the ability to send public links to users. It works though, if users are already part of the site and you share with their users instead of their emails.

Steps to Reproduce

1. Create a page
2. Click on the button Share
3. Enter an E-mail
4. Click on Send or Send public link (if public links are enabled)

Expected Results

The share button works and the message is sent to the user(s).

Actual Results

After clicking on Send, the button displays retry and there is a 400 error returned on the console

Workaround

The Copy Link button on the share option works to share the page directly with the users or share the page searching for their user on Confluence, instead of the e-mail.