I need to get the last row of each group in a dataframe grouped by two columns.

I've tried some options seen in other posts but they're nor working for me.

This is my dataframe:

```
   Day        Date                  Status    Element
 1 2020-09-01 2020-09-01 07:00:00        0          A
 2 2020-09-01 2020-09-01 07:00:00        0          B
 3 2020-09-01 2020-09-01 07:00:00        1          C
 4 2020-09-01 2020-09-01 07:00:00        1          D
 5 2020-09-01 2020-09-01 08:00:00        0          E

```

It is grouped by `Day` and `Element`. I need the last row of each group when the column `Status` is 1.

I'm trying this:

```
output = df%>% 
      filter(status== 1) %>% 
      slice(n())

```

But I'm getting the error: `Error in UseMethod("slice") : no applicable method for 'slice' applied to an object of class "c('grouped_df', 'tbl_df', 'tbl', 'data.frame')"`