Hi,

I get this error when I try to update my custom module. When i delete it first and than reinstall the module the error does not appear. Any ideas how I can fix this? Can the data sequence in my manifest be the problem or any other ideas? 

This is the error

This is my manifest

{
    'name': "Vupa_custom_fields",
    'depends': ['base', 'sale',],
    'category': 'Sales/CRM',
    'summary': 'Custom fields',
    'sequence': 42,
    'installable': True,
    'application': False,
    'license': 'LGPL-3',
    'data': [
        'views/res_partner.xml',
        'views/sale_order.xml',
        'data/klantnummer_sequence.xml',
        'report/report.xml',
        'report/noodverlichting.xml' 
    ]
}

This is my view