error missCompare with post_impt_diag

[Anna84908]

Hi,
I am using your great package missCompare to analyse and impute missing data in my dataset. After using random implementation, I wanted to proceed with some post-imputation diagnostics for my data.
However, missCompare stops with stating the following error:
"The fun.y argument of stat_summary() is deprecated as of ggplot2 3.3.0.
ℹ Please use the fun argument instead.
ℹ The deprecated feature was likely used in the missCompare package."

Could your provide any advice? This would be much appreciated!
Anna