cubicweb #3168045 silent error in the web ui when creating an entity raises Unauthorized [validation pending]

Traceback (most recent call last):
  File "/home/auc/confs/unlish/cubicweb/etwist/server.py", line 135, in render_request
    return self._render_request(request)
  File "/home/auc/confs/unlish/cubicweb/etwist/server.py", line 160, in _render_request
    content = self.appli.handle_request(req, path)
  File "/home/auc/confs/unlish/cubicweb/web/application.py", line 376, in main_handle_request
    content = self.core_handle(req, path)
  File "/home/auc/confs/unlish/cubicweb/web/application.py", line 483, in core_handle
    result = self.error_handler(req, ex, tb=False)
  File "/home/auc/confs/unlish/cubicweb/web/application.py", line 559, in error_handler
    return self.ajax_error_handler(req, ex)
  File "/home/auc/confs/unlish/cubicweb/web/application.py", line 583, in ajax_error_handler
    status = ex.status
AttributeError: 'Unauthorized' object has no attribute 'status'
prioritynormal
typebug
done in3.17.12
load0.500
load left0.000
closed by<not specified>