when I want to change estimated work to required... there is an error:

2016-12-19 11:11:03.949 ** ERROR ** ERROR **
2016-12-19 11:11:03.949 ** ERROR ** on file '/var/www/projeqtor/tool/generateImputationAlert.php' at line (113)
2016-12-19 11:11:03.950 ** ERROR ** cause = Undefined index: workDetail
2016-12-19 11:11:41.643 ** ERROR ** securityGetAccessRightYesNo : '' is not an existing object class
2016-12-19 11:11:41.643 ** ERROR ** securityGetAccessRightYesNo(menu, update, Ticket #, )
2016-12-19 11:11:41.643 ** ERROR ** ERROR **
2016-12-19 11:11:41.643 ** ERROR ** on file '/var/www/projeqtor/tool/projeqtor.php' at line (1606)
2016-12-19 11:11:41.643 ** ERROR ** cause = First parameter must either be an object or the name of an existing class
2016-12-19 11:11:47.948 ** ERROR ** securityGetAccessRightYesNo : '' is not an existing object class
2016-12-19 11:11:47.948 ** ERROR ** securityGetAccessRightYesNo(menu, update, Ticket #, )
2016-12-19 11:11:47.948 ** ERROR ** ERROR **
2016-12-19 11:11:47.948 ** ERROR ** on file '/var/www/projeqtor/tool/projeqtor.php' at line (1606)
2016-12-19 11:11:47.948 ** ERROR ** cause = First parameter must either be an object or the name of an existing class
2016-12-19 11:12:12.309 ** ERROR ** securityGetAccessRightYesNo : '' is not an existing object class
2016-12-19 11:12:12.309 ** ERROR ** securityGetAccessRightYesNo(menu, update, Ticket #, )
2016-12-19 11:12:12.310 ** ERROR ** ERROR **
2016-12-19 11:12:12.310 ** ERROR ** on file '/var/www/projeqtor/tool/projeqtor.php' at line (1606)
2016-12-19 11:12:12.310 ** ERROR ** cause = First parameter must either be an object or the name of an existing class
2016-12-19 11:12:17.716 ** ERROR ** securityGetAccessRightYesNo : '' is not an existing object class
2016-12-19 11:12:17.716 ** ERROR ** securityGetAccessRightYesNo(menu, update, Ticket #, )
2016-12-19 11:12:17.717 ** ERROR ** ERROR **
2016-12-19 11:12:17.717 ** ERROR ** on file '/var/www/projeqtor/tool/projeqtor.php' at line (1606)
2016-12-19 11:12:17.717 ** ERROR ***** cause = First parameter must either be an object or the name of an existing class