Hello,

I'm having the same issue described in this bug (even if the fix is included in my server version):

ir_qweb.py", line 257, in _get_field
    field = record._fields[field_name]
AttributeError: 'NoneType' object has no attribute '_fields'

Error to render compiling AST
AttributeError: 'NoneType' object has no attribute '_fields'
Template: 1728
Path: /templates/t/t/div/section[7]/div[1]/div/div/div[1]/div/div[1]/div/form/div/h4
Node:

any suggestion?