extjs5 - Extjs 5 Uncaught TypeError: Cannot read property 'schema' of null -

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i changed extjs 4.2.3 5.0.1 , have error.any ideas?

uncaught typeerror: cannot read property 'schema' of null

ext.define.extractdataext-all-debug.js:8144 ext.base.base.addmembers.callparentext-all-debug.js:61852 ext.define.extractdataext-all-debug.js:68174 ext.define.onnodeinsertext-all-debug.js:68093 ext.define.onnodeappendext-all-debug.js:68329 ext.define.updateroot


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