Installation

Open Problem Library - 500 error when selecting subject or target set

Open Problem Library - 500 error when selecting subject or target set

by Walter Schwarz -
Number of replies: 1
I have ran the OPL-update script which has populated the "Subject:" list.  The script processed 36000 files, 25 subjects, 115 textbooks, and 3 statistics with a successful completion message of "Done." at the end.  However, when making a selection from the "Subject" list or the "Target Set" list via the Library Browser when browsing the "Open Problem Library" the following error appears:

WebworkClient Errors

Errors:

500 Internal Server Error at /opt/webwork/webwork2/lib/WebworkClient.pm line 293.

End Errors

WeBWorK error

An error occured while processing your request. For help, please send mail to this site's webmaster (webmaster@institution.edu), including all of the following information as well as what what you were doing when the error occured.

Mon Jan 23 11:42:47 2017

Warning messages

Error messages

xmlrpcCall to searchLib returned no result for

Call stack

The information below can help locate the source of the problem.

  • in WeBWorK::ContentGenerator::instructorXMLHandler::content called at line 233 of /opt/webwork/webwork2/lib/WeBWorK/ContentGenerator.pm
  • in WeBWorK::ContentGenerator::go called at line 382 of /opt/webwork/webwork2/lib/WeBWorK.pm

Request information

MethodPOST
URI/webwork2/instructorXMLHandler
HTTP Headers
User-AgentMozilla/5.0 (Windows NT 10.0; WOW64; rv:45.0) Gecko/20100101 Firefox/45.0
Accept*/*
Connectionkeep-alive
Refererhttp://webwork.institution.edu/webwork2/MATH-112-11-SP17/instructor/setmaker/?effectiveUser=admin&key=w9OGrFONT0mRrjyvjRLPTcybp4d2F82L&user=admin
Content-Length262
X-Requested-WithXMLHttpRequest
Accept-Encodinggzip, deflate
Content-Typeapplication/x-www-form-urlencoded; charset=UTF-8
CookieWeBWorKCourseAuthen.MATH-112-11-SP17=admin%09w9OGrFONT0mRrjyvjRLPTcybp4d2F82L%091485189569; _ga=GA1.2.1585775511.1472827924; __utma=104196051.1585775511.1472827924.1475524870.1475606390.5; __utmz=104196051.1473969880.3.2.utmcsr=google|utmccn=(organic)|utmcmd=organic|utmctr=(not%20provided)
Accept-Languageen-US,en;q=0.5
Hostwebwork.institution.edu 

Any suggestions on what is causing this error?
In reply to Walter Schwarz

Re: Open Problem Library - 500 error when selecting subject or target set

by Gavin LaRose -

For what it's worth, a belated reply. I was getting the same error, and looking in the web server's error log turned up the error message 

Illegal field name 'APR::Table=HASH(0x7f58f28daa28)' at /usr/share/perl5/vendor_perl/SOAP/Transport/HTTP.pm line 801

A search suggested this was a bug with an older version of SOAP::Lite. Upgrading that module seems to have resolved the issue, though the RPC call response time is now monstrously long.

Gavin