get_estimates doesn't seem to know aliases in vcov argument

[ethans-carl]

When using get_estimates(model, vcov = "stata"), there is a blank error returned. However, get_estimates(model, vcov = "HC1") returns the expected output. The same is true for "robust" as an alias for "HC3."

[vincentarelbundock]

Thanks a lot for the report. This should be fixed in the development version on Github. Make sure you restart R after installing for the change to take effect.