APPLICATION ERROR 401

Database query failed. Error received from database was #-1: 
ERROR: invalid input syntax for integer: "true" for the query: 
INSERT INTO mantis_project_table
( name, status, enabled, view_state, file_path, description, inherit_global )
VALUES
( ?, ?, ?, ?, ?, ?, ?).

    <Array> { 
        [0] => 'Test Project',
        [1] => 10,
        [2] => 'true',
        [3] => 10,
        [4] => '',
        [5] => '',
        [6] => 'true'
    }

Call stack:
./mantisbt/core/project_api.php     307   db_query_bound (...)
./mantisbt/manage_proj_create.php   49    project_create (...)

APPLICATION ERROR 401

Database query failed. Error received from database was #-1:
ERROR: invalid input syntax for integer: "true" for the query:
INSERT INTO mantis_project_hierarchy_table
( child_id, parent_id, inherit_parent )
VALUES
( ?, ?, ? ).

    <Array> {
        [0] => 2,
        [1] => 1,
        [2] => 'true'
    }

Call stack:
./mantisbt/core/project_hierarchy_api.php   54   db_query_bound (...)
./mantisbt/manage_proj_subproj_add.php      43   project_hierarchy_add (...)