estou chamando o method onEdit passando paramento do aluno = 1 e esta apresentando o erro abaixo não consegui identificar o erro:

SQLSTATE[HY000]: General error: could not call class constructor

File: libadiantidatabaseTRecord.php : 0
PDOStatement->fetchObject()
File: libadiantidatabaseTRecord.php : 46
AdiantiDatabaseTRecord->load(1)
File: appmodelidebAlunos.class.php : 24
AdiantiDatabaseTRecord->__construct(1,1)
File: appcontrolconveniadosAlunoForm.class.php : 258
Alunos->__construct(1)
File: :
AlunoForm->onEdit(AlunoForm,onEdit,1,1)
File: libadianticontrolTPage.php : 51
call_user_func(AlunoForm,onEdit,AlunoForm,onEdit,1,1)
File: libadianticontrolTPage.php : 213
AdiantiControlTPage->run()
File: libadianticoreAdiantiCoreApplication.php : 53
AdiantiControlTPage->show(AlunoForm,onEdit,1,1)
File: engine.php : 20
AdiantiCoreAdiantiCoreApplication::run(1)
File: engine.php : 39
TApplication::run(1)