Unable to get table for multiple linenames in astroquery.nist

Astropy
1

I apologize if I am making a silly mistake, but I am unable to get the NIST data table when using multiple element names while using astroquery.nist.

Using

from astroquery.nist import Nist
Nist.query((np.around(6500,2)-0.1)*u.AA, (np.around(6550,2)+0.1)*u.AA, linename='Al',wavelength_type='vac+air')

gives me a table, but using

from astroquery.nist import Nist
Nist.query((np.around(6500,2)-0.1)*u.AA, (np.around(6550,2)+0.1)*u.AA, linename='Al;Ba',wavelength_type='vac+air')

does not.

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Any help will be greatly appreciated!

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