When we enqueue the task using the web-ui we have the above error

ShallowGoldfish8 I think I understand the issue,
basically I think the issue is:
task.connect(model_params, 'model_params')Since this is a nested dict:
model_params = { "loss_function": "Logloss", "eval_metric": "AUC", "class_weights": {0: 1, 1: 60}, "learning_rate": 0.1 }The class_weights is stored as a String key, but catboost expects "int" key, hence it fails.
One option would be to remove the task.connect(model_params, 'model_params'')
Another hack (until we fix it) would be to do:
task.connect(model_params, 'model_params') model_params["class_weights"] = { 0: model_params["class_weights"].get("0", model_params["class_weights"].get(0)) 1: model_params["class_weights"].get("1", model_params["class_weights"].get(1)) }wdyt?