Issue in migration camunda from 7.14 to 7.18-alpha3

After migrating the camunda we are seeing the below issue while loading cockpit.

camunda version- 7.18.0-alpha3
spring boot- 2.7.0
java -11

Refused to apply style from ‘http://localhost:8053/bps/camunda/api/cockpit/plugin/cockpitPlugins/static/app/plugin.css’ because its MIME type (‘application/json’) is not a supported stylesheet MIME type, and strict MIME checking is enabled.
require.js:5 Uncaught Error: Script error for “cockpit-plugin-cockpitPlugins/plugin”
Common Errors
at makeError (require.js:5:1799)
at HTMLScriptElement.onScriptError (require.js:5:17179)