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extjs7 selectfield®³£ Uncaught TypeError: Cannot read property 'hasPendingLoad' of null

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Ô´´aview.js

{
    xtype: 'selectfield', label: 'Ö§³ÖîÐÍ', bind: {store: '{types}', value: '{types}'},
    multiSelect: true
}

ÍÖÆviewmodel.js

data: {
	types: null
},
stores: {
        types: {
            data: [...]
        }
    }

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