Twitter button (twitter / facebook combo) share returns 302

Hi since a few days, the TWITTER share button, which contains the FB / TW share returns a 302 error, and won’t share

When preparing the share (after onclick button)

https://shareaholic.com/v2/share/shorten_link?url=somelink.com&service=

When trying to share

https://shareaholic.com/v2/share?authentication_id=595080&service_nickname=facebook&link=somelink.com

I have noticed that the post is empty, and the return xml isnt valid

XML Parsing Error: no element found Location: moz-nullprincipal:{c7ae6492-6db7-4294-aa67-e80ca9ad3554} Line Number 1, Column 1:
^

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