cohortDiagnostics:  Problem while computing `..1 = dplyr::across(...)`.

Dear ShinyDeploy team,
We have noticed that our study shiny app isn't working correctly anymore (I guess because of updates on the cohort diagnostic package?). https://data.ohdsi.org/cervelloDiagnostics/ 

Specifically, under the cohort characterization tab, it returns the error: Problem while computing `..1 = dplyr::across(...)`.

Could you please help resolve this issue? 
Thank you!!