Has anyone ever experienced errors that do not occur locally

Question

Has anyone ever experienced errors that do not occur locally but do occur once deployed I get this error when trying to run a the sign in mutation and I don not get this error locally Cloudfront logging indicated signin succedded but then this error occured when the data was beingreturned <https github com MattLangsenkamp fnb serverless 2 blob picture upload src main kotlin fnb graphql AuthSchema kt> ```java lang IllegalArgumentException List has more than one element at kotlin collections CollectionsKt CollectionsKt single Collections kt 550 at io kotless dsl ktor app KotlessResponse toHttp KotlessResponse kt 73 at io kotless dsl ktor Kotless$handleRequest$response$1 invokeSuspend Kotless kt 80 at kotlin coroutines jvm internal BaseContinuationImpl resumeWith ContinuationImpl kt 33 at io ktor util pipeline SuspendFunctionGun resumeRootWith PipelineContext kt 238 at io ktor util pipeline SuspendFunctionGun loop PipelineContext kt 194 at io ktor util pipeline SuspendFunctionGun access$loop PipelineContext kt 67 at io ktor util pipeline SuspendFunctionGun$continuation$1 resumeWith PipelineContext kt 144 at kotlin coroutines jvm internal BaseContinuationImpl resumeWith ContinuationImpl kt 46 at io ktor util pipeline SuspendFunctionGun resumeRootWith PipelineContext kt 238 at io ktor util pipeline SuspendFunctionGun loop PipelineContext kt 194 at io ktor util pipeline SuspendFunctionGun access$loop PipelineContext kt 67 at io ktor util pipeline SuspendFunctionGun$continuation$1 resumeWith PipelineContext kt 144 at kotlin coroutines jvm internal BaseContinuationImpl resumeWith ContinuationImpl kt 46 at io ktor util pipeline SuspendFunctionGun resumeRootWith PipelineContext kt 238 at io ktor util pipeline SuspendFunctionGun loop PipelineContext kt 194 at io ktor util pipeline SuspendFunctionGun access$loop PipelineContext kt 67 at io ktor util pipeline SuspendFunctionGun$continuation$1 resumeWith PipelineContext kt 144 at kotlin coroutines jvm internal BaseContinuationImpl resumeWith ContinuationImpl kt 46 at io ktor util pipeline SuspendFunctionGun resumeRootWith PipelineContext kt 238 at io ktor util pipeline SuspendFunctionGun loop PipelineContext kt 194 at io ktor util pipeline SuspendFunctionGun access$loop PipelineContext kt 67 at io ktor util pipeline SuspendFunctionGun$continuation$1 resumeWith PipelineContext kt 144 at kotlin coroutines jvm internal BaseContinuationImpl resumeWith ContinuationImpl kt 46 at io ktor util pipeline SuspendFunctionGun resumeRootWith PipelineContext kt 238 at io ktor util pipeline SuspendFunctionGun loop PipelineContext kt 194 at io ktor util pipeline SuspendFunctionGun access$loop PipelineContext kt 67 at io ktor util pipeline SuspendFunctionGun$continuation$1 resumeWith PipelineContext kt 144 at kotlin coroutines jvm internal BaseContinuationImpl resumeWith ContinuationImpl kt 46 at kotlinx coroutines internal ScopeCoroutine afterResume Scopes kt 32 at kotlinx coroutines AbstractCoroutine resumeWith AbstractCoroutine kt 113 at kotlin coroutines jvm internal BaseContinuationImpl resumeWith ContinuationImpl kt 46 at kotlinx coroutines internal ScopeCoroutine afterResume Scopes kt 32 at kotlinx coroutines AbstractCoroutine resumeWith AbstractCoroutine kt 113 at kotlin coroutines jvm internal BaseContinuationImpl resumeWith ContinuationImpl kt 46 at kotlinx coroutines internal ScopeCoroutine afterResume Scopes kt 32 at kotlinx coroutines AbstractCoroutine resumeWith AbstractCoroutine kt 113 at kotlin coroutines jvm internal BaseContinuationImpl resumeWith ContinuationImpl kt 46 at kotlinx coroutines DispatchedTask run DispatchedTask kt 56 at kotlinx coroutines EventLoopImplBase processNextEvent EventLoop common kt 272 at kotlinx coroutines BlockingCoroutine joinBlocking Builders kt 79 at kotlinx coroutines BuildersKt BuildersKt runBlocking Builders kt 54 at kotlinx coroutines BuildersKt runBlocking Unknown Source at kotlinx coroutines BuildersKt BuildersKt runBlocking$default Builders kt 36 at kotlinx coroutines BuildersKt runBlocking$default Unknown Source at io kotless dsl ktor Kotless handleRequest Kotless kt 54 at sun reflect NativeMethodAccessorImpl invoke0 Native Method at sun reflect NativeMethodAccessorImpl invoke NativeMethodAccessorImpl java 62 at sun reflect DelegatingMethodAccessorImpl invoke DelegatingMethodAccessorImpl java 43 at java lang reflect Method invoke Method java 498 at lambdainternal EventHandlerLoader$StreamMethodRequestHandler handleRequest EventHandlerLoader java 356 at lambdainternal EventHandlerLoader$2 call EventHandlerLoader java 902 at lambdainternal AWSLambda startRuntime AWSLambda java 341 at lambdainternal AWSLambda lt clinit gt AWSLambda java 63 at java lang Class forName0 Native Method at java lang Class forName Class java 348 at lambdainternal LambdaRTEntry main LambdaRTEntry java 150 ```

TanVD · Answer

In general it is possible since Kotless is only emulating cloud But in your case it is definitely bug I am taking a look