Adding a user into a group fails

I tried to add a user in a group:

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I typed his email and I press add, then nothing happen

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Into the inspect element I see the follow:

Requests that fail:

POST: [https://bitbucket.org/!api/internal/teams/

{75a579d8-6b29-4759-9faf-8899f8c091f8}/groups/customersuccess/members|https://bitbucket.org/%21api/internal/teams/%257B75a579d8-6b29-4759-9faf-8899f8c091f8%257D/groups/customersuccess/members]

Output:

> {&#34~_{;type": "error", "error": {"message": "Resource not found&}~#34;}}

PUT: [https://bitbucket.org/!api/1.0/users/{75a579d8-6b29-4759-9faf-8899f8c091f8}

/invitations/laurent.spohr@coupa.com/

{75a579d8-6b29-4759-9faf-8899f8c091f8}

/customersuccess|https://bitbucket.org/%21api/1.0/users/%257B75a579d8-6b29-4759-9faf-8899f8c091f8%257D/invitations/laurent.spohr%40coupa.com/%257B75a579d8-6b29-4759-9faf-8899f8c091f8%257D/customersuccess]

Output:

> Email cannot be in path