message: updte error message
diff: @@ -63,7 +63,7 @@ describe('AccessController#save', () => {
  it('runs', async () => {
  const jsdomAlert = window.alert // remember the jsdom alert
  window.alert = () => {} // provide an empty implementation for window.alert
  - expect(instantiateAccessController(dom, store).save()).rejects.toThrow('Error : ACL file save rejected : no acl:Write')
  + expect(instantiateAccessController(dom, store).save()).rejects.toThrow('ACL file save rejected : no acl:Write')
  window.alert = jsdomAlert
  })
  })
  