Provenance / Reason Error integration intomcat-stdOut.log

HI, How can we know where these errors come from?

Looking at tomcat-stdOut.log we see these errors and we do not know where they come from

759549622 [Appian AppianServerThreadPoolProvider 38518693] ERROR com.appiancorp.connectedsystems.http.execution.AppianHttpRequestExecutor  - ConnectorRuntimeException [title=Authentication is required, This request requires Basic authentication, but no credentials were provided]

758710962 [Appian AppianServerThreadPoolProvider 38323558] ERROR com.appiancorp.connectedsystems.http.execution.AppianHttpRequestExecutor - ConnectorRuntimeException [title=The external system did not understand the request, The request was missing required details or was improperly formatted]

759419814 [Appian AppianServerThreadPoolProvider 38490188] ERROR com.appiancorp.connectedsystems.http.execution.AppianHttpRequestExecutor - ConnectorRuntimeException [title=The requested URL cannot be found, The external system did not find the requested URL or is refusing to allow access]