My Gibbon installation is v.20 and I’m installing the extension Reporting (by Andy Statham). This error is generated when I click on “MAKE PDF” in PDF Creation.
<<PDOException: SQLSTATE[42000]: Syntax error or access violation: 1055 Expression #1 of SELECT list is not in GROUP BY clause and contains nonaggregated column ‘gibbonCourseClassPerson.gibbonCourseClassID’ which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by in /home/modules/Reporting/pdf_create_function.php:942 Stack trace: #0 /home/modules/Reporting/pdf_create_function.php(942): PDOStatement->execute(Array) #1 /home/modules/Reporting/pdf_create_function.php(454): readStudentClassListNoRepeat(Object(PDO), ‘0000001291’, ‘025’) #2 /home/modules/Reporting/pdf_create.php(98): setpdf->subjectReportRow(Object(MYPDF)) #3 {main}>>
Can you help me please?