I get the message "Error: Unsupported index type: POSIXlt" if I type myData in the Console.
Rounding and then converting from dttm to date format works for me.
library(dplyr)
library(lubridate)
myData <- as_tsibble(ts(1:3, frequency = 365, start = 2010)) %>%
mutate(index = as_date(round_date(index, unit = "day")))
This is my first post, so please excuse any errors.