Hi everyone! Wondering if anyone has seen this be...

# graphql-kotlin

[Matt DaSilva]

Hi everyone!

Wondering if anyone has seen this before. We are investigating a weird issue in our component test suite. It's not something we have seen in our testing or production environments

The following graphql errors are intermittently returned when testing certain queries in our codebase. The issue occurs during happy path tests (when data should be populated and errors null), but also in unhappy path tests (when errors should be populated by a different error)

[KotlinxGraphQLError(message=Cannot invoke "java.lang.Comparable.compareTo(Object)" because "pivot" is null, locations=null, path=null, extensions=null)].
[KotlinxGraphQLError(message=Cannot invoke "java.lang.Comparable.compareTo(Object)" because "a[runHi]" is null, locations=null, path=null, extensions=null)]

We are using the default SimpleDataFetcherExceptionHandler
1. graphql error messages should have the format "Exception while fetching data (%s) : %s", path, exception.getMessage()" - these ones do not
2. I've added logging the exception handler. However on the occurrence of these graphql errors, nothing is logged
3. 1. and 2. suggest these errors are occurring after the error handling part of the execution strategy
Note:
• seems to occur on queries with a high number of data loaders
• occurs more on jenkins than local builds
graphqlKotlinExpediaVersion = '8.5.0'