Error:
Invalid status: 9

http://946434-6934-e88ceb.runbot31.odoo.com/web/content/1841-3faa080/web.assets_backend.js:7549
Traceback:
INVALID_STATE_ERROR: Invalid status: 9
   at InviteServerContext.prototype.accept (http://946434-6934-e88ceb.runbot31.odoo.com/web/content/1841-3faa080/web.assets_backend.js:7549:65)
   at _answerCall (http://946434-6934-e88ceb.runbot31.odoo.com/web/content/1841-3faa080/web.assets_backend.js:8176:129)
   at acceptIncomingCall (http://946434-6934-e88ceb.runbot31.odoo.com/web/content/1841-3faa080/web.assets_backend.js:8162:823)
   at _onClickAcceptButton (http://946434-6934-e88ceb.runbot31.odoo.com/web/content/1841-3faa080/web.assets_backend.js:8084:342)
   at Anonymous function (http://946434-6934-e88ceb.runbot31.odoo.com/web/content/1840-5546d18/web.assets_common.js:4614:1)
   at jQuery.event.dispatch (http://946434-6934-e88ceb.runbot31.odoo.com/web/content/1840-5546d18/web.assets_common.js:1666:368)
   at elemData.handle (http://946434-6934-e88ceb.runbot31.odoo.com/web/content/1840-5546d18/web.assets_common.js:1652:76)