kotlin_version = '1.3.11' spring_boot_version = '2...

# spring

[ander.dev]

kotlin_version = '1.3.11'
spring_boot_version = '2.1.0.RELEASE'

[sdeleuze]

Make sure to use the latest Boot release 2.1.2.RELEASE, even it probably won't change your issue as answered by others.

[breun]

Which also comes with dependency management for Kotlin, so you don’t need to specify the Kotlin version yourself. 🙂

[ander.dev]

thanks @sdeleuze, @breun