System error: Unknown Error when setting up request to TabPy. null

[tb582]

Discussed in #621

^{Originally posted by tb582 October 17, 2023}
Anyone familiar with that error ? seems to be captured in backendProcessManager.log but System error: Unknown Error when setting up request to TabPy. null is the only thing returned to prep :(

{"ts":"2023-10-17T12:32:19.972","sev":"info","k":"backend-manager","v":"Java path: /Applications/Tableau Prep Builder 2023.2.app/Contents/Plugins/jre/bin/java","pid":8411} {"ts":"2023-10-17T12:32:19.977","sev":"info","k":"backend-manager","v":"spawned restApi with PID: 8417","pid":8411} {"ts":"2023-10-17T12:32:57.184","sev":"info","k":"backend-manager","v":"New connection","pid":8411} {"ts":"2023-10-17T12:32:57.188","sev":"info","k":"backend-manager","v":"Received HTTP request from backend","pid":8411} {"ts":"2023-10-17T12:32:57.189","sev":"info","k":"backend-manager","v":"Got POST /backendConfig request","pid":8411} {"ts":"2023-10-17T12:32:57.190","sev":"info","k":"backend-manager","v":"Got {\"port\":53272}","pid":8411} {"ts":"2023-10-17T12:32:57.190","sev":"info","k":"backend-manager","v":"Successfully started backend","pid":8411} {"ts":"2023-10-17T12:32:57.193","sev":"info","k":"backend-manager","v":"Destroying a client connection","pid":8411} {"ts":"2023-10-17T12:32:57.194","sev":"info","k":"backend-manager","v":"Closing HTTP server","pid":8411} {"ts":"2023-10-17T12:33:35.089","sev":"info","k":"rest-api-stdout","v":"WARNING: An illegal reflective access operation has occurred","pid":8411} {"ts":"2023-10-17T12:40:22.309","sev":"info","k":"rest-api-stdout","v":"\nWARNING: Illegal reflective access by com.tableau.loom.utils.ConnectionUtils (jar:file:/Applications/Tableau%20Prep%20Builder%202023.2.app/Contents/Resources/app/loom-rest-api-1.0-SNAPSHOT.jar!/BOOT-INF/lib/loom-lang-20232.0.jar!/) to method sun.nio.fs.UnixPath.asByteArray()\nWARNING: Please consider reporting this to the maintainers of com.tableau.loom.utils.ConnectionUtils\nWARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations\nWARNING: All illegal access operations will be denied in a future release\njava.util.concurrent.ExecutionException: com.tableau.loom.lang.api.exceptions.LangSystemException: System error: Unknown Error when setting up request to TabPy. null","pid":8411} {"ts":"2023-10-17T12:40:22.309","sev":"info","k":"rest-api-stdout","v":"\n\tat com.tableau.loom.runtime.FlowEvaluationJobCompletion.get(FlowEvaluationJobCompletion.java:89)","pid":8411} {"ts":"2023-10-17T12:40:22.309","sev":"info","k":"rest-api-stdout","v":"\n\tat com.tableau.loom.runtime.FlowEvaluationJobCompletion.get(FlowEvaluationJobCompletion.java:35)\n\tat com.tableau.loom.execution.engine.FlowRunner.call(FlowRunner.java:50)\n\tat com.tableau.loom.execution.engine.FlowRunner.call(FlowRunner.java:36)\n\tat com.tableau.loom.orchestration.execution.CallableWrapperWithSecurityContext.call(CallableWrapperWithSecurityContext.java:44)\n\tat java.base/java.util.concurrent.FutureTask.run(Unknown Source)\n\tat com.tableau.loom.orchestration.execution.RunnableWrapperWithSecurityContext.run(RunnableWrapperWithSecurityContext.java:43)\n\tat java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)\n\tat java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)\n\tat java.base/java.lang.Thread.run(Unknown Source)\nCaused by: com.tableau.loom.lang.api.exceptions.LangSystemException: System error: Unknown Error when setting up request to TabPy. null","pid":8411} {"ts":"2023-10-17T12:40:22.309","sev":"info","k":"rest-api-stdout","v":"\n\tat com.tableau.loom.runtime.EvaluationInstance.waitForFlow(EvaluationInstance.java:288)\n\tat com.tableau.loom.runtime.FlowEvaluationJobCompletion.get(FlowEvaluationJobCompletion.java:73)\n\t... 9 more\nCaused by: com.tableau.loom.pythonSupport.PythonScriptException: Unknown Error when setting up request to TabPy. null\n\tat com.tableau.loom.pythonSupport.PythonExecutor.withHttpClient(PythonExecutor.java:140)\n\tat com.tableau.loom.pythonSupport.PythonExecutor.run(PythonExecutor.java:107)\n\tat com.tableau.loom.plugin.execution.PluginEntityRunner.execute(PluginEntityRunner.java:159)\n\tat com.tableau.loom.plugin.execution.PluginEntityRunner.selectIntoAsync(PluginEntityRunner.java:104)\n\tat com.tableau.loom.runtime.SelectIntoExecutor.call(SelectIntoExecutor.java:590)\n\tat com.tableau.loom.runtime.SelectIntoExecutor.call(SelectIntoExecutor.java:121)","pid":8411}