Hi Jay,

may be badly formatted in xml

Try this 

This is my field and the error I'm getting below.

approved_date" string = " approved_date" attrs = "{'invisible': [('state', '! =', new)]}" />

Odoo Server Error

Traceback (most recent call last): 
  File "C: \ Program Files \ Odoo 14 \ server \ odoo \ tools \ convert.py", line 677, in _tag_root 
    f (rec) 
  File "C: \ Program Files \ Odoo 14 \ server \ odoo \ tools \ convert.py", line 580, in _tag_record 
    record = model._load_records ([data], self.mode == 'update') 
  File "C: \ Program Files \ Odoo 14 \ server \ odoo \ models.py", line 4196, in _load_records 
    data ['record'] ._ load_records_write (data ['values']) 
  File "C: \ Program Files \ Odoo 14 \ server \ odoo \ addons \ base \ models \ ir_ui_view. Py", line 1842, in _load_records_write 
    super (View, self) ._ load_records_write (values)
  File "C: \ Program Files \ Odoo 14 \ server \ odoo \ models.py", line 4133, in _load_records_write 
    self.write (values) 
  File "C: \ Program Files \ Odoo 14 \ server \ odoo \ addons \ website \ models \ theme_models.py", line 267, in write 
    res = super (IrUiView, other_views) .write (vals) 
  File "C: \ Program Files \ Odoo 14 \ server \ odoo \ addons \ website \ models \ ir_ui_view.py", line 68, in write 
    return super (View, self) .write (vals) 
  File "C: \ Program Files \ Odoo 14 \ server \ odoo \ addons \ base \ models \ ir_ui_view.py", line 500, in write 
    res = super (View, self) .write (self._compute_defaults (vals)) 
  File "C: \ Program Files \ Odoo 14 \ server \ odoo \ models.py", line 3691, in write
    fields [0] .determine_inverse (real_recs) 
  File "C: \ Program Files \ Odoo 14 \ server \ odoo \ fields.py", line 1185, in determine_inverse 
    getattr (records, self.inverse) () 
  File "C: \ Program Files \ Odoo 14 \ server \ odoo \ addons \ base \ models \ ir_ui_view.py", line 300, in _inverse_arch 
    view.write (data) 
  File "C: \ Program Files \ Odoo 14 \ server \ odoo \ addons \ website \ models \ theme_models.py", line 267, in write 
    res = super (IrUiView, other_views) .write (vals) 
  File "C: \ Program Files \ Odoo 14 \ server \ odoo \ addons \ website \ models \ ir_ui_view.py", line 68, in write 
    return super (View, self) .write (vals)
  File "C: \ Program Files \ Odoo 14 \ server \ odoo \ addons \ base \ models \ ir_ui_view.py", line 500, in write 
    res = super (View, self) .write (self._compute_defaults (vals)) 
  File "C: \ Program Files \ Odoo 14 \ server \ odoo \ models.py", line 3681, in write 
    real_recs._validate_fields (vals, inverse_fields) 
  File "C: \ Program Files \ Odoo 14 \ server \ odoo \ models.py", line 1260, in _validate_fields 
    check (self) 
  File "C: \ Program Files \ Odoo 14 \ server \ odoo \ addons \ base \ models \ ir_ui_view.py", line 411, in _check_xml 
    )). with_traceback (e .__ traceback__) from None
  File "C: \ Program Files \ Odoo 14 \ server \ odoo \ addons \ base \ models \ ir_ui_view.py", line 391, in _check_xml 
    view.postprocess_and_fields (view_doc, validate = True) 
  File "C: \ Program Files \ Odoo 14 \ server \ odoo \ addons \ base \ models \ ir_ui_view.py", line 851, in postprocess_and_fields 
    arch, name_manager = self._postprocess_view (node, model, validate = validate) 
  File "C: \ Program Files \ Odoo 14 \ server \ odoo \ addons \ base \ models \ ir_ui_view.py", line 863, in _postprocess_view 
    self.postprocess (node, [], editable, name_manager) 
  File "C: \ Program Files \ Odoo 14 \ server \ odoo \ addons \ base \ models \ ir_ui_view.py", line 963, in postprocess
    self.postprocess (child, current_node_path, node_info ['editable'], name_manager) 
  File "C: \ Program Files \ Odoo 14 \ server \ odoo \ addons \ base \ models \ ir_ui_view.py", line 963, in postprocess 
    self. postprocess (child, current_node_path, node_info ['editable'], name_manager)
  File "C: \ Program Files \ Odoo 14 \ server \ odoo \ addons \ base \ models \ ir_ui_view.py", line 963, in postprocess 
    self.postprocess (child, current_node_path, node_info ['editable'], name_manager) 
  [Previous line repeated 1 more time] 
  File "C: \ Program Files \ Odoo 14 \ server \ odoo \ addons \ base \ models \ ir_ui_view.py", line 958, in postprocess
    transfer_node_to_modifiers (node, node_info ['modifiers'], self._context, current_node_path) 
  File "C: \ Program Files \ Odoo 14 \ server \ odoo \ addons \ base \ models \ ir_ui_view.py", line 66, in transfer_node_to_modifiers 
    modifiers. update (ast.literal_eval (attrs))
  File "C: \ Program Files \ Odoo 14 \ python \ lib \ ast.py", line 91, in literal_eval 
    return _convert (node_or_string) 
  File "C: \ Program Files \ Odoo 14 \ python \ lib \ ast.py", line 79, in _convert 
    map (_convert, node.values))) 
  File "C: \ Program Files \ Odoo 14 \ python \ lib \ ast.py", line 74, in _convert 
    return list (map (_convert, node.elts))
  File "C: \ Program Files \ Odoo 14 \ python \ lib \ ast.py", line 72, in _convert 
    return tuple (map (_convert, node.elts)) 
  File "C: \ Program Files \ Odoo 14 \ python \ lib \ ast.py", line 90, in _convert 
    return _convert_signed_num (node) 
  File "C: \ Program Files \ Odoo 14 \ python \ lib \ ast.py", line 63, in _convert_signed_num 
    return _convert_num (node) 
  File "C: \ Program Files \ Odoo 14 \ python \ lib \ ast.py", line 55, in _convert_num 
    raise ValueError ('malformed node or string:' + repr (node)) 
odoo.exceptions.ValidationError: Error while validating view: 

malformed node or string: 

The above exception was the direct cause of the following exception:

<field name="name" string="Name" attrs="{'invisible': [('state','!=',new)]}"/>