I can't get my cross-tab to run for the ACS using the online analysis (SDA).

Here is what I am getting:

No valid cases: row var=pwcity, column var=metro, weight var=perwt, filter(s)=age(16-95) empstat(10-12) classwkr(20-22) metarea(560) ind(770) year(2017)

I can’t figure out why there are no valid cases.

It seems this error is due to variable availability. The PWCITY variable is not available in the years 2001 - 2004 and 2012 - onward. Since it looks like you are aiming to analyze data in the 2017 ACS sample, the table will not run.