ERROR when im doing PCA

I dont know why it's error :')
my data frame (which i named it df) doesnt have any NULL data(already check it with colSums(, when i want to see the standard deviation of my data, my PCA went error ;___;

help.... :')

looks to me more like some kind of strange rmarkdown issue perhaps...
Have you tried your code in a vanilla R script perhaps ?

Ah you right, i copy paste my coded from my R markdown to kaggle's notebook , and im including

into my kaggle notebook, that's why it's error.

thanks for your response.

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