Hi @pdrieger_splunk, I encounter the same issue as people above when following the exemplary steps of the barebones_template.ipynb. So e.g. | makeresults count=10 | streamstats c as i | eval s = i%3 | eval feature_{s}=0 | foreach feature_* [eval <<FIELD>>=random()/pow(2,31)] | fit MLTKContainer mode=stage algo=barebone_template time feature* i into app:barebone_template will result in "unable to read JSON response from https://localhost:49155/fit. Either you have no MLTK Container running or you probably face a network or connection issue. Please investigate Splunk search.log or python logs for more details. Returned with exception (Expecting value: line 1 column 1 (char 0))" If I run | makeresults count=10 | streamstats c as i | eval s = i%3 | eval feature_{s}=0 | foreach feature_* [eval <<FIELD>>=random()/pow(2,31)] | fit MLTKContainer I get the same error message. My only active container is the __dev__ container - once I run the command another container of the same name is started (which is probably not what i want). Setup is: DSDL 5.1.0, MLTK 5.4.0, a docker container containing the golden image cpu 5.1.0 as __dev__ Is there a known way to fix the issue? ... View more