The steps to reproduce the error are as follows:
1、Run the command to create the environment:
sudo docker run -it -v postgresml_data:/var/lib/postgresql -p 5434:5432 -p 8000:8000 ghcr.io/postgresml/postgresml:2.8.1 sudo -u postgresml psql -d postgresml

2、Execute the following SQL statements:
DROP TABLE IF EXISTS pgml.commits_build CASCADE;
CREATE TABLE pgml.commits_build (
vector Integer[],
result bool
);

3、Insert data into thepgml.commits_build table:
INSERT INTO pgml.commits_build VALUES
('{4,5,6}', false),
('{5,6,7}', true),
('{6,7,8}', false),
('{7,8,9}', true),
('{8,9,10}', false);

4、Run thepgml.train function:
SELECT * FROM pgml.train(
'commits:category:build',
'classification',
'pgml.commits_build',
'result'
);
It can run normally and the linear algorithm has been deployed.

5、Encounter the following error:
-- ERROR: calledOption::unwrap() on aNone value
SELECT * FROM pgml.train('commits:category:build', algorithm => 'ridge');