YAML.dump error

[MiroBabic]

When I create trained model for lot of records (over 100k) and want to dump it to file, I got Argument error "invalid value for Integer"

as I google it looks like issue with ruby (I tried to update 2.4.4 to 2.7.3 but still problem)
is there any chance to change dumping of data to file, or allow model save to database?

[MiroBabic]

Ok I found out that problem is if token is "1_" or any number with underscore after it. It looks like YAML problem so it really might be better to offer some other way how to store trained model