PSPavithra Subramaniyam Syncfusion Team June 18, 2019 02:15 AM
Thanks for contacting Syncfusion support.
From your query we suspect that some duplicate package might be installed in “@syncfusion” folder of node_modules while updating. This may occur due to version mismatch of packages. So we suggest you to delete the “@syncfusion” folder and “package.lock.json” file from your application and follow the steps provided in the below documentation for update the packages.