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Title
h
Hexa
11/19/2019, 6:32 PManyone seen this error before?
Caused by: java.lang.IllegalArgumentException: Response pipeline couldn't transform 'class java.util.Collections$SingletonMap' to the OutgoingContent
at io.ktor.server.engine.BaseApplicationResponse$Companion$setupSendPipeline$1.invokeSuspend(BaseApplicationResponse.kt:271)
at io.ktor.server.engine.BaseApplicationResponse$Companion$setupSendPipeline$1.invoke(BaseApplicationResponse.kt)
at io.ktor.util.pipeline.SuspendFunctionGun.loop(PipelineContext.kt:268)
at io.ktor.util.pipeline.SuspendFunctionGun.access$loop(PipelineContext.kt:67)
at io.ktor.util.pipeline.SuspendFunctionGun.proceed(PipelineContext.kt:141)
at io.ktor.util.pipeline.SuspendFunctionGun.execute(PipelineContext.kt:161)
at io.ktor.util.pipeline.Pipeline.execute(Pipeline.kt:27)n
napperley
11/19/2019, 11:47 PMAre you doing JSON serialisation?
s
sonofblip
11/20/2019, 4:37 PMyeah you may need to add a content negotiation strategy to your ktor application, like gson or something
install(ContentNegotiation) {
gson {
setDateFormat(DateFormat.LONG)
setPrettyPrinting()
}
}