I get the following error:
Error in complete.cases(dt) : invalid 'type' (list) of argument
This message has never been before using complete.cases in a data frame.
The class(dt) data.frame returns data.frame , so there is no problem.
dt relatively large - 800,000 surveys out of 90 variables.
Similar operations with other data frames do not occur.
Does anyone know what the problem is?
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