dominikriemer opened a new issue, #4669: URL: https://github.com/apache/streampipes/issues/4669
### Discussed in https://github.com/apache/streampipes/discussions/4668 <div type='discussions-op-text'> <sup>Originally posted by **MichaelKoch11** June 30, 2026</sup> I created a new adapter and wanted to deploy it as a custom extension. Steps I followed: 1. Created the adapter extension. 2. Built the Docker image. 3. Deployed the extension in Kubernetes. 4. Installed the extension in StreamPipes. 5. Tried to use the adapter in the UI. When opening/using the adapter in the UI, I get the following error in the backend logs: ``` servlet.service() for servlet [dispatcherServlet] in context with path [/streampipes-backend] threw exception [Request processing failed: java.lang.NullPointerException: Cannot invoke "java.util.List.stream()" because the return value of "org.apache.streampipes.model.extensions.svcdiscovery.SpServiceRegistration.getSupportedScriptLanguages()" is null] with root cause java.lang.NullPointerException: Cannot invoke "java.util.List.stream()" because the return value of "org.apache.streampipes.model.extensions.svcdiscovery.SpServiceRegistration.getSupportedScriptLanguages()" is null at org.apache.streampipes.rest.impl.connect.TransformationScriptLanguageResource.getAll(TransformationScriptLanguageResource.java:63) at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(Unknown Source) at java.base/java.lang.reflect.Method.invoke(Unknown Source) ``` Environment: - Extension SDK version: `0.98` - StreamPipes version: `0.99.0-SNAPSHOT` - Deployment: Kubernetes Could this be caused by an incompatibility between the SDK version and the StreamPipes version, or is this a bug? Thanks!</div> -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
