We are having the following error when trying to upgrade the product module or install a new module. How to resolve this issue? The database has live data.

Traceback (most recent call last):
  File "/odoo/odoo-server/odoo/tools/convert.py", line 713, in parse
    self._tag_root(de)
  File "/odoo/odoo-server/odoo/tools/convert.py", line 675, in _tag_root
    f(rec)
  File "/odoo/odoo-server/odoo/tools/convert.py", line 675, in _tag_root
    f(rec)
  File "/odoo/odoo-server/odoo/tools/convert.py", line 578, in _tag_record
    record = model._load_records([data], self.mode == 'update')
  File "/odoo/odoo-server/odoo/models.py", line 4040, in _load_records
    data['record']._load_records_write(data['values'])
  File "/odoo/odoo-server/odoo/models.py", line 3978, in _load_records_write
    self.write(values)
  File "/odoo/odoo-server/odoo/addons/base/models/ir_ui_view.py", line 490, in write
    return super(View, self).write(self._compute_defaults(vals))
  File "/odoo/odoo-server/odoo/models.py", line 3556, in write
    fields[0].determine_inverse(real_recs)
  File "/odoo/odoo-server/odoo/fields.py", line 1114, in determine_inverse
    getattr(records, self.inverse)()
  File "/odoo/odoo-server/odoo/addons/base/models/ir_ui_view.py", line 299, in _inverse_arch
    view.write(data)
  File "/odoo/odoo-server/odoo/addons/base/models/ir_ui_view.py", line 490, in write
    return super(View, self).write(self._compute_defaults(vals))
  File "/odoo/odoo-server/odoo/models.py", line 3551, in write
    real_recs._validate_fields(set(vals) - set(inverse_fields))
  File "/odoo/odoo-server/odoo/models.py", line 1167, in _validate_fields
    check(self)
  File "/odoo/odoo-server/odoo/addons/base/models/ir_ui_view.py", line 385, in _check_xml
    view_def = view.read_combined(['arch'])
  File "/odoo/odoo-server/odoo/addons/base/models/ir_ui_view.py", line 711, in read_combined
    parent_view = root.inherit_id.read_combined(fields=fields)
  File "/odoo/odoo-server/odoo/addons/base/models/ir_ui_view.py", line 699, in read_combined
    view_arch = etree.fromstring(view_data['arch'].encode('utf-8'))
AttributeError: 'bool' object has no attribute 'encode'