Issues with experiment errors over the last two weeks

[SamGreene]

Hi,

I use Azure Databricks in the North Central US region and have had some issues over the last two weeks.  Three weeks ago, I was able to run a forecast experiment.  

Last week I got this error on 7/24:

• [UNRESOLVED_COLUMN.WITH_SUGGESTION] A column, variable, or function parameter with name `ds` cannot be resolved. Did you mean one of the following? [`months_between(ds, lag_d3527435, true)`]. SQLSTATE: 42703

Now I get this error in the GUI when trying to proceed past the first screen and train:

• Must provide experiment_dir where group has Manage permission when running AutoML in group clusters (POST: ajax-api/2.0/automl/experiments)

I'm using the same personal ML cluster configuration in single-user access mode.  I'm not sure what group clusters mean. 

Do you have any advice? 

Thanks!

[SamGreene]

  The ds column was definitely in the data, no doubt about it. The same cluster was used for the experiments before, so it worked a week before and then stopped. It is working again, so I guess it was just an intermittent issue.