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Data Import Wizard not reading .CSV file and receiving error message.

Knowledge Article Number 000193537
Description When customer drags the .csv file to browser to import/update the data using the Data Import Wizard, they will receive this error message.

getting the following error: Error while running java://ui.aura.components.setup.dataimporter.DataImporterController/ACTION$getStepComponent:{"name":"mapping","object":"ms_users__c","operation":"upsert","mappings":"[]"} : Cannot read property 'attributes' of null
Resolution This is an issue with the drag feature of the Data Import Wizard. Please use the .CSV box instead and upload the data that way. 


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