NoClassDefFoundError org/mapstruct/factory/Mappers

[christer-finfollow]

When we try to deploy our SpringBoot app with Swagger 2 on AWS Lambda we get following error

Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [springfox.documentation.swagger2.mappers.RequestParameterMapperImpl]: Constructor threw exception; nested exception is java.lang.NoClassDefFoundError: org/mapstruct/factory/Mappers

Any clue what is causing the issue?

[filiphr]

This problem is usually not related to MapStruct, but rather to Springfox Swagger 2 (which I assume is what you are using.

Make sure that you have the org.mapstruct:mapstruct dependency and that the versions you have match. I have seen this happening when org.mapstruct:mapstruct-jdk8 and org.mapstruct:mapstruct are present

[vugarbakhishli]

thank you very much this answer helped me to solve my problem