Notice: Undefined variable: _SESSION in tsa_form_enrolment_node_form_alter() (line 6 of /var/www/tsa/sites/all/modules/tsa/tsa.module).
Notice: Trying to access array offset on value of type null in tsa_form_enrolment_node_form_alter() (line 6 of /var/www/tsa/sites/all/modules/tsa/tsa.module).
Notice: Undefined index: school_id in tsa_form_enrolment_node_form_alter() (line 130 of /var/www/tsa/sites/all/modules/tsa/tsa.module).
Notice: Trying to get property 'field_tuition_book_name' of non-object in tsa_form_enrolment_node_form_alter() (line 131 of /var/www/tsa/sites/all/modules/tsa/tsa.module).
Warning: array_key_exists() expects parameter 2 to be array, null given in tsa_form_enrolment_node_form_alter() (line 131 of /var/www/tsa/sites/all/modules/tsa/tsa.module).