ERROR xxx odoo.tools.view_validation: :4:0:ERROR:RELAXNGV:RELAXNG_ERR_NOELEM: Expecting an element data,got nothing
ERROR xxx odoo.tools.view_validation: :4:0:ERROR:RELAXNGV:RELAXNG_ERR_INVALIDATTR:Invalid attribute optional for element field
ERROR xxx odoo.tools.view_validation: :4:0:ERROR:RELAXNGV:RELAXNG_ERR_EXTRACONTENT: Element tree has extra content:field