http://docker.ugr.es:8203/openccml/linear_regression?formula=weight~group&na__action=na.exclude&dataset=/root/openccml/wrapperR/dataset.csv weights=NULL&subset=NULL are optional parameters and they are not required if optional when the URL is composed
Check:
http://....../openccml/linear_regression?weights=NULL&subset=NULL&formula=weight~group&na__action=na.exclude&dataset=/root/openccml/wrapperR/dataset.csv
Must be compatible with:
http://docker.ugr.es:8203/openccml/linear_regression?formula=weight~group&na__action=na.exclude&dataset=/root/openccml/wrapperR/dataset.csv
weights=NULL&subset=NULL
are optional parameters and they are not required if optional when the URL is composed