Issue
| User: | Dev User (dev@example.com) |
|---|---|
| Student message: | Error creating question variant |
| Instructor message: | CourseIssueError: /PrairieLearn/apps/prairielearn/elements/pl-multiple-choice/pl-multiple-choice.py: Error calling prepare(): Error: CodeCallerNative child process exited unexpectedly, code = 1, signal = null |
| ID: | 13 |
| Date: | 2024-08-05 12:37:31-05 (CDT) |
Console log:
Traceback (most recent call last):
File "/PrairieLearn/apps/prairielearn/python/zygote.py", line 395, in <module>
worker_loop()
File "/PrairieLearn/apps/prairielearn/python/zygote.py", line 303, in worker_loop
val = method(*args)
File "/PrairieLearn/apps/prairielearn/elements/pl-multiple-choice/pl-multiple-choice.py", line 430, in prepare
raise ValueError(
ValueError: pl-multiple-choice element has duplicate choices: ['$t = 0\\rm\\ s$']
Traceback (most recent call last):
File "/PrairieLearn/apps/prairielearn/python/zygote.py", line 437, in <module>
raise Exception(
Exception: worker process exited unexpectedly with status 256
Associated data:
{
"course": {
"id": 1,
"path": "/PrairieLearn/exampleCourse",
"title": "Example Course",
"branch": "master",
"options": {
"devModeFeatures": [],
"useNewQuestionRenderer": true
},
"created_at": "2024-07-23T18:37:20.684105+00:00",
"deleted_at": null,
"repository": null,
"short_name": "XC 101",
"commit_hash": null,
"sync_errors": null,
"sharing_name": null,
"sharing_token": "ed2b3e6f-95df-417d-b7ae-f2c3611aaa08",
"sync_warnings": "",
"example_course": true,
"institution_id": 1,
"template_course": false,
"display_timezone": "America/Chicago",
"sync_job_sequence_id": null,
"yearly_enrollment_limit": null,
"course_instance_enrollment_limit": null
},
"variant": {
"id": "688",
"date": {},
"open": true,
"broken": true,
"number": 1,
"params": {
"d": 4,
"h": 0,
"m": 1.6,
"v0": 18,
"t_c": 0,
"none": "false",
"t_x1": 0,
"t_x2": 0.222,
"t_x3": 0.473,
"t_x4": 0,
"theta": 28
},
"options": {},
"user_id": "1",
"duration": 0,
"group_id": null,
"broken_at": {},
"broken_by": null,
"course_id": "1",
"num_tries": 0,
"question_id": "134",
"true_answer": {},
"variant_seed": "1ryalti",
"workspace_id": null,
"authn_user_id": "1",
"first_duration": null,
"formatted_date": "2024-08-05 12:37:31 (CDT)",
"course_instance_id": "1",
"instance_question_id": null
},
"question": {
"id": "134",
"qid": "gallery/multipleChoice/complex",
"type": "Freeform",
"uuid": "5c16523e-accc-41b7-9d38-41dc66a36b4f",
"title": "Randomized multiple-choice question",
"number": 241,
"options": null,
"topic_id": "6",
"course_id": "1",
"directory": "gallery/multipleChoice/complex",
"deleted_at": null,
"sync_errors": null,
"client_files": [
"client.js",
"question.html",
"answer.html"
],
"dependencies": {},
"sync_warnings": "",
"grading_method": "Internal",
"partial_credit": true,
"single_variant": false,
"workspace_args": null,
"workspace_home": null,
"workspace_port": null,
"shared_publicly": false,
"workspace_image": null,
"template_directory": null,
"show_correct_answer": true,
"sync_job_sequence_id": null,
"workspace_environment": {},
"workspace_url_rewrite": null,
"external_grading_files": null,
"external_grading_image": null,
"workspace_graded_files": null,
"external_grading_enabled": null,
"external_grading_timeout": null,
"external_grading_entrypoint": null,
"shared_publicly_with_source": false,
"workspace_enable_networking": null,
"external_grading_environment": {},
"external_grading_enable_networking": null
}
}
System data:
{
"stack": "CourseIssueError: /PrairieLearn/apps/prairielearn/elements/pl-multiple-choice/pl-multiple-choice.py: Error calling prepare(): Error: CodeCallerNative child process exited unexpectedly, code = 1, signal = null\n at visitNode (file:///PrairieLearn/apps/prairielearn/dist/question-servers/freeform.js:519:23)\n at process.processTicksAndRejections (node:internal/process/task_queues:95:5)\n at async visitNode (file:///PrairieLearn/apps/prairielearn/dist/question-servers/freeform.js:567:30)\n at async traverseQuestionAndExecuteFunctions (file:///PrairieLearn/apps/prairielearn/dist/question-servers/freeform.js:583:21)\n at async processQuestionHtml (file:///PrairieLearn/apps/prairielearn/dist/question-servers/freeform.js:736:102)\n at async file:///PrairieLearn/apps/prairielearn/dist/question-servers/freeform.js:843:93\n at async instrumentedWithMetrics (file:///PrairieLearn/packages/opentelemetry/dist/metrics.js:47:16)\n at async file:///PrairieLearn/apps/prairielearn/dist/question-servers/freeform.js:916:56\n at async withCodeCaller (file:///PrairieLearn/apps/prairielearn/dist/lib/code-caller/index.js:195:20)\n at async file:///PrairieLearn/apps/prairielearn/dist/question-servers/freeform.js:915:16\n at async file:///PrairieLearn/packages/opentelemetry/dist/tracing.js:7:28\n at async makeVariant (file:///PrairieLearn/apps/prairielearn/dist/lib/question-variant.js:62:61)\n at async makeAndInsertVariant (file:///PrairieLearn/apps/prairielearn/dist/lib/question-variant.js:140:52)\n at async ensureVariant (file:///PrairieLearn/apps/prairielearn/dist/lib/question-variant.js:235:12)\n at async getAndRenderVariant (file:///PrairieLearn/apps/prairielearn/dist/lib/question-render.js:289:26)\n at async file:///PrairieLearn/apps/prairielearn/dist/pages/instructorQuestionPreview/instructorQuestionPreview.js:45:5",
"courseErrData": {
"stack": "Error\n at CodeCallerNative._errorData (file:///PrairieLearn/apps/prairielearn/dist/lib/code-caller/code-caller-native.js:546:29)\n at CodeCallerNative._callCallback (file:///PrairieLearn/apps/prairielearn/dist/lib/code-caller/code-caller-native.js:470:29)\n at CodeCallerNative._handleChildExit (file:///PrairieLearn/apps/prairielearn/dist/lib/code-caller/code-caller-native.js:398:18)\n at ChildProcess.emit (node:events:519:28)\n at ChildProcess._handle.onexit (node:internal/child_process:294:12)\n at Process.callbackTrampoline (node:internal/async_hooks:130:17)",
"outputBoth": "Traceback (most recent call last):\n File \"/PrairieLearn/apps/prairielearn/python/zygote.py\", line 395, in <module>\n worker_loop()\n File \"/PrairieLearn/apps/prairielearn/python/zygote.py\", line 303, in worker_loop\n val = method(*args)\n File \"/PrairieLearn/apps/prairielearn/elements/pl-multiple-choice/pl-multiple-choice.py\", line 430, in prepare\n raise ValueError(\nValueError: pl-multiple-choice element has duplicate choices: ['$t = 0\\\\rm\\\\ s$']\nTraceback (most recent call last):\n File \"/PrairieLearn/apps/prairielearn/python/zygote.py\", line 437, in <module>\n raise Exception(\nException: worker process exited unexpectedly with status 256\n",
"outputData": "",
"childIsNull": true,
"lastCallData": {
"cwd": "/PrairieLearn/apps/prairielearn/elements/pl-multiple-choice",
"fcn": "prepare",
"args": [
"<pl-multiple-choice answers-name=\"t\" none-of-the-above=\"false\">\n <pl-answer correct=\"true\">$t = 0\\rm\\ s$</pl-answer>\n <pl-answer correct=\"false\">$t = 0\\rm\\ s$</pl-answer>\n <pl-answer correct=\"false\">$t = 0.222\\rm\\ s$</pl-answer>\n <pl-answer correct=\"false\">$t = 0.473\\rm\\ s$</pl-answer>\n <pl-answer correct=\"false\">$t = 0\\rm\\ s$</pl-answer>\n</pl-multiple-choice>",
{
"params": {
"d": 4,
"h": 0,
"m": 1.6,
"v0": 18,
"t_c": 0,
"none": "false",
"t_x1": 0,
"t_x2": 0.222,
"t_x3": 0.473,
"t_x4": 0,
"theta": 28
},
"options": {
"question_path": "/PrairieLearn/exampleCourse/questions/gallery/multipleChoice/complex",
"course_extensions_path": "/PrairieLearn/exampleCourse/elementExtensions",
"client_files_course_path": "/PrairieLearn/exampleCourse/clientFilesCourse",
"server_files_course_path": "/PrairieLearn/exampleCourse/serverFilesCourse",
"client_files_question_path": "/PrairieLearn/exampleCourse/questions/gallery/multipleChoice/complex/clientFilesQuestion"
},
"extensions": [],
"variant_seed": 3866970870,
"answers_names": {},
"correct_answers": {}
}
],
"file": "pl-multiple-choice",
"paths": [
"/PrairieLearn/apps/prairielearn/python"
],
"forbidden_modules": []
},
"outputStderr": "Traceback (most recent call last):\n File \"/PrairieLearn/apps/prairielearn/python/zygote.py\", line 395, in <module>\n worker_loop()\n File \"/PrairieLearn/apps/prairielearn/python/zygote.py\", line 303, in worker_loop\n val = method(*args)\n File \"/PrairieLearn/apps/prairielearn/elements/pl-multiple-choice/pl-multiple-choice.py\", line 430, in prepare\n raise ValueError(\nValueError: pl-multiple-choice element has duplicate choices: ['$t = 0\\\\rm\\\\ s$']\nTraceback (most recent call last):\n File \"/PrairieLearn/apps/prairielearn/python/zygote.py\", line 437, in <module>\n raise Exception(\nException: worker process exited unexpectedly with status 256\n",
"outputStdout": "",
"callbackIsNull": false,
"timeoutIDIsNull": true
}
}
Correct answer
Student view placeholder
In student views this area is used for assessment and score info.
Staff information
Staff user:
Dev User
dev@example.com
Question:
Title:
Randomized multiple-choice question
Started at:
2024-08-05 12:37:31 (CDT)
Duration:
0 s
Show/Hide answer
{}