MissingFieldException error in BitBucketServerReviewer

[astoriawinter]

Hello! I build danger-kotlin from sources, and when I try to run (I use bitbucket) danger-kotlin *stash_pull_request_number* --dangerfile=Dangerfile.df.kts I get such error:

kotlinx.serialization.MissingFieldException: Field 'lastReviewedCommit' is required for type with serial name                 
'systems.danger.kotlin.models.bitbucket.BitBucketServerReviewer', but it was missing
    at kotlinx.serialization.internal.PluginExceptionsKt.throwMissingFieldException(PluginExceptions.kt:20)
    at systems.danger.kotlin.models.bitbucket.BitBucketServerReviewer.<init>(BitBucketServer.kt:233)
    at systems.danger.kotlin.models.bitbucket.BitBucketServerReviewer$$serializer.deserialize(BitBucketServer.kt:233)
    at systems.danger.kotlin.models.bitbucket.BitBucketServerReviewer$$serializer.deserialize(BitBucketServer.kt:233)
    at kotlinx.serialization.json.internal.PolymorphicKt.decodeSerializableValuePolymorphic(Polymorphic.kt:63)
    at kotlinx.serialization.json.internal.StreamingJsonDecoder.decodeSerializableValue(StreamingJsonDecoder.kt:32)
    at kotlinx.serialization.encoding.AbstractDecoder.decodeSerializableValue(AbstractDecoder.kt:43)
    at kotlinx.serialization.encoding.AbstractDecoder.decodeSerializableElement(AbstractDecoder.kt:70)
    at kotlinx.serialization.encoding.CompositeDecoder$DefaultImpls.decodeSerializableElement$default(Decoding.kt:535)
    at kotlinx.serialization.internal.ListLikeSerializer.readElement(CollectionSerializers.kt:80)
    at kotlinx.serialization.internal.AbstractCollectionSerializer.readElement$default(CollectionSerializers.kt:51)
    at kotlinx.serialization.internal.AbstractCollectionSerializer.merge(CollectionSerializers.kt:36)
    at kotlinx.serialization.internal.AbstractCollectionSerializer.deserialize(CollectionSerializers.kt:43)
    at kotlinx.serialization.json.internal.PolymorphicKt.decodeSerializableValuePolymorphic(Polymorphic.kt:63)
    at kotlinx.serialization.json.internal.StreamingJsonDecoder.decodeSerializableValue(StreamingJsonDecoder.kt:32)
    at kotlinx.serialization.encoding.AbstractDecoder.decodeSerializableValue(AbstractDecoder.kt:43)
    at kotlinx.serialization.encoding.AbstractDecoder.decodeSerializableElement(AbstractDecoder.kt:70)
    at systems.danger.kotlin.models.bitbucket.BitBucketServerPR$$serializer.deserialize(BitBucketServer.kt:195)
    at systems.danger.kotlin.models.bitbucket.BitBucketServerPR$$serializer.deserialize(BitBucketServer.kt:195)
    at kotlinx.serialization.json.internal.PolymorphicKt.decodeSerializableValuePolymorphic(Polymorphic.kt:63)
    at kotlinx.serialization.json.internal.StreamingJsonDecoder.decodeSerializableValue(StreamingJsonDecoder.kt:32)
    at kotlinx.serialization.encoding.AbstractDecoder.decodeSerializableValue(AbstractDecoder.kt:43)
    at kotlinx.serialization.encoding.AbstractDecoder.decodeSerializableElement(AbstractDecoder.kt:70)
    at systems.danger.kotlin.models.bitbucket.BitBucketServer$$serializer.deserialize(BitBucketServer.kt:13)
    at systems.danger.kotlin.models.bitbucket.BitBucketServer$$serializer.deserialize(BitBucketServer.kt:13)
    at kotlinx.serialization.json.internal.PolymorphicKt.decodeSerializableValuePolymorphic(Polymorphic.kt:63)
    at kotlinx.serialization.json.internal.StreamingJsonDecoder.decodeSerializableValue(StreamingJsonDecoder.kt:32)
    at kotlinx.serialization.encoding.AbstractDecoder.decodeSerializableValue(AbstractDecoder.kt:43)
    at kotlinx.serialization.encoding.AbstractDecoder.decodeNullableSerializableElement(AbstractDecoder.kt:79)
    at systems.danger.kotlin.models.danger.DangerDSL$$serializer.deserialize(DangerDSL.kt:14)
    at systems.danger.kotlin.models.danger.DangerDSL$$serializer.deserialize(DangerDSL.kt:14)
    at kotlinx.serialization.json.internal.PolymorphicKt.decodeSerializableValuePolymorphic(Polymorphic.kt:63)
    at kotlinx.serialization.json.internal.StreamingJsonDecoder.decodeSerializableValue(StreamingJsonDecoder.kt:32)
    at kotlinx.serialization.encoding.AbstractDecoder.decodeSerializableValue(AbstractDecoder.kt:43)
    at kotlinx.serialization.encoding.AbstractDecoder.decodeSerializableElement(AbstractDecoder.kt:70)
    at systems.danger.kotlin.models.danger.DSL$$serializer.deserialize(DangerDSL.kt:9)
    at systems.danger.kotlin.models.danger.DSL$$serializer.deserialize(DangerDSL.kt:9)
    at kotlinx.serialization.json.internal.PolymorphicKt.decodeSerializableValuePolymorphic(Polymorphic.kt:63)
    at kotlinx.serialization.json.internal.StreamingJsonDecoder.decodeSerializableValue(StreamingJsonDecoder.kt:32)
    at kotlinx.serialization.json.Json.decodeFromString(Json.kt:95)
    at systems.danger.kotlin.MainDangerRunner.<init>(MainDangerRunner.kt:131)
    at systems.danger.kotlin.MainScriptKt.Danger(MainScript.kt:49)
    at Dangerfile_df.<init>(Dangerfile.df.kts:6)

I saw same issue with gitlab https://github.com/danger/kotlin/issues/145, I guess it's related to default argument. Can it be fixed?

[gianluz]

please see https://github.com/danger/kotlin/pull/211, should fix the issue

[astoriawinter]

@gianluz Hi, also faced same error with emailAddress in BitBucketServerUser. Email can be null, as user that created PR could be deleted. Please, add fix to this case as well.

[msarelo]

@gianluz Possibly a lot of data in BitBucket server responses could be nullable. I got two different errors:

1. emailAddress in my cases when Bitbucket added some automatic comment.
2. field tasks in BitBucketServerCommentDetail in my case is also nullable and got this error:

   kotlinx.serialization.MissingFieldException: Field 'tasks' is required for type with serial name 'systems.danger.kotlin.models.bitbucket.BitBucketServerCommentDetail', but it was missing