SAP DI-API Error (random) "-8037 - Failed to connect or log on to SLD, please check connection parameters and configure file"

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This error should only be able to appear in SAP 9.2 and lower. SAP 9.3 should not have this error

What is the reason for this error and how to fix it?
This is due to a misconfiguration of the Apache Tomcat Server. Please see SAP note: https://launchpad.support.sap.com/#/notes/2526992 on how to fix it.