Error when using unnest() following pivot_wider() in R

Question

I have a dataset that I am trying to reshape as wider

The original dataset is something like this

#df

Cell_line       Gene     AF
COLO320         MYC      0.5
COLO320         KRAS     0.4
H524            MYC      0.6
H524            KRAS     0.5

Expected is something like this:

**Cell_line** **MYC** **KRAS**
COLO320         0.5      0.4
H524            0.6      0.5

I don't want to lose any of my values so what I did is the following:

df1 = df %>% pivot_wider(names_from = Gene, values_from = AF, values_fn = list) 

However I was getting a "dbl" as a list in the column values so I added a unnest():

df1 = df %>% pivot_wider(names_from = Gene, values_from = AF, values_fn = list)  %>% unnest(cols = everything())

However, I am getting the following error example : Error in unnest():

In row 8, can't recycle input of size 4 to size 2.

Anybody knows what is the solution?

My aim at the end is to reshape the data wider without losing the values.