Does citus support madlib ?

We use citus-7.5-7 and postgresql-10.5 build a distributed database.
Create a distribution table, Insert some data, then call the **madlib** algorithm to train the classification model will report an error.
```SQL
CREATE TABLE houses (id INT, tax INT, bedroom INT, bath FLOAT, price INT, size INT, lot INT);
SELECT master_create_distributed_table('houses', 'id', 'hash');
SELECT master_create_worker_shards('houses', 2, 1);
```
```SQL
INSERT INTO houses VALUES
(1 , 590 , 2 , 1 , 50000 , 770 , 22100),
(2 , 1050 , 3 , 2 , 85000 , 1410 , 12000),
(3 , 20 , 3 , 1 , 22500 , 1060 , 3500),
(4 , 870 , 2 , 2 , 90000 , 1300 , 17500),
(5 , 1320 , 3 , 2 , 133000 , 1500 , 30000),
(6 , 1350 , 2 , 1 , 90500 , 820 , 25700),
(7 , 2790 , 3 , 2.5 , 260000 , 2130 , 25000),
(8 , 680 , 2 , 1 , 142500 , 1170 , 22000),
(9 , 1840 , 3 , 2 , 160000 , 1500 , 19000),
(10 , 3680 , 4 , 2 , 240000 , 2790 , 20000),
(11 , 1660 , 3 , 1 , 87000 , 1030 , 17500),
(12 , 1620 , 3 , 2 , 118600 , 1250 , 20000),
(13 , 3100 , 3 , 2 , 140000 , 1760 , 38000),
(14 , 2070 , 2 , 3 , 148000 , 1550 , 14000),
(15 , 650 , 3 , 1.5 , 65000 , 1450 , 12000);
```
```SQL
SELECT madlib.svm_classification('houses',
'houses_svm',
'price < 100000',
'ARRAY[1, tax, bath, size]'
);
```
After execute the last SQL language, report an error.
The example [http://madlib.apache.org/docs/latest/group__grp__svm.html](url)