Kriging error, var1.pred NA

Hey i am new to rstudio, and i want to try the krige function in gstat package. i tried to do it by looking tutorial on the internet, but i keep getting my var1.pred and var1.var to NA,

Hi Azhar, welcome to!

It's best to ask a question like this following our FAQ: Tips for writing R-related questions guide. It, along witha reprex, makes it much easier for others to understand your issue and figure out how to help.