## WeBWorK Main Forum

### Re: Can't delete course

by Hieu Nguyen -
Number of replies: 0
Gavin,

I tried upgrading the course but got the error message below. I'll try to have the course tables deleted manually. Thanks for your help.

--Hieu

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## WeBWorK error

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

Mon Jul 31 22:31:10 2017

### Error messages

DBD::mysql::db do failed: Incorrect table name '2017_Fall_Discrete_Structures_03160_2_Nguyen_global_user_achievement' at /opt/webwork/webwork2/lib/WeBWorK/DB/Schema/NewSQL/Std.pm line 828.

### Call stack

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

• in WeBWorK::DB::Schema::NewSQL::Std::handle_error called at line 299 of /opt/webwork/webwork2/lib/WeBWorK/DB/Schema/NewSQL/Std.pm
• in WeBWorK::DB::Schema::NewSQL::Std::tableFieldExists called at line 222 of /opt/webwork/webwork2/lib/WeBWorK/Utils/CourseIntegrityCheck.pm
• in WeBWorK::Utils::CourseIntegrityCheck::checkTableFields called at line 110 of /opt/webwork/webwork2/lib/WeBWorK/Utils/CourseIntegrityCheck.pm
• in WeBWorK::Utils::CourseIntegrityCheck::checkCourseTables called at line 2402 of /opt/webwork/webwork2/lib/WeBWorK/ContentGenerator/CourseAdmin.pm
• in WeBWorK::ContentGenerator::CourseAdmin::upgrade_course_form called at line 454 of /opt/webwork/webwork2/lib/WeBWorK/ContentGenerator/CourseAdmin.pm
• in WeBWorK::ContentGenerator::CourseAdmin::body called at line 155 of /opt/webwork/webwork2/lib/WeBWorK/Template.pm
• in WeBWorK::Template::template called at line 531 of /opt/webwork/webwork2/lib/WeBWorK/ContentGenerator.pm
• in WeBWorK::ContentGenerator::content called at line 380 of /opt/webwork/webwork2/lib/WeBWorK/ContentGenerator/CourseAdmin.pm
• in WeBWorK::ContentGenerator::CourseAdmin::content called at line 203 of /opt/webwork/webwork2/lib/WeBWorK/ContentGenerator.pm
• in WeBWorK::ContentGenerator::go called at line 382 of /opt/webwork/webwork2/lib/WeBWorK.pm