Error while adding new dashboard widget

[Jiboy]

HI
After upgrading litium version to 7.4, I justI followed this example: https://docs.litium.com/documentation/litium-documentation/dashboard/how-to-create-your-own-widgets_3

When i drag/drop the widget to the dashboard i get the below errors and its not adding to dashboard

Litium version: 7.4.2

[ton.nguyen]

Have you “Registered components in AcceleratorModule” and built the project?

Is there any error in the Network tab of the DevTools?

[Jiboy]

Yes … I registered the component in Extension.ts file

While build, am getting below error

Network tab showing like this

[ton.nguyen]

Please follow the upgrade instruction to upgrade the FieldTypes project to 7.4: https://docs.litium.com/documentation/upgrading-to-litium-7 (’ For Litium 7.4 and higher version’ section)