After upgrading to Talend Studio R2025-03, an ESB Job incorporating the tRestRequest component fails to start. During the deployment and start process, the following error was observed:
java.lang.ClassNotFoundException: jak
Cause
The issue arose due to the Talend Runtime (ESB) environment continuing to operate with an old version, specifically R2024-05, which lacks full compatibility with the newer Talend Studio R2025-03. The missing class (jak) indicates a discrepancy in the runtime libraries between Talend Studio and Talend Runtime container.
Resolution
Upgrade Talend Runtime (ESB) to version R2025-03, aligning it with Talend Studio version currently in use.
Environment