Hi Nurbek,
We are suspecting that your issue is caused due to the duplicate packages are generated at your application. The syncfusion component packages should be installed in the same major version such as (v20.2.*). If you are using more than one major versions packages then there will be duplicate packages. So, use same major version packages for all components.
Please follow the below steps to remove the duplicate packages.
1. Delete the @Syncfusion folder from node_modules and the package-lock.json file from the root folder.
2. Clear npm cache at your end.
3. Update our packages to the latest version (all packages be upgraded to 20.*).
4. Run the ‘npm install --legacy-peer-deps” command to install the node_modules.
If the issue still persist at your end, kindly provide us the issue reproducing sample, so that we can assist you to achieve your requirement.
Regards,
Ragunath S