SVM error on german credit data

[LamaTe]

trafficstars

svm resampling on bootstrap with german credit data failed with error message: Error: Assertion on 'primary_key' failed: Contains duplicated values, position 3. This happened PipeOp colapply's $train()

Potentially caused by pipe-op functionality (pre-processing).

Affected functionalities:

• resample tab -> train model
• benchmark tab -> compute benchmark

Reproduce steps:

1. Start application
2. Set german credit data as task
3. Create SVM learner
4. Go to resample tab (or benchmark tab respectively)
5. Select Bootstrap resampling and start learner training