SyntaxError : invalid syntax Cell In [4], line 1 delta <- (forecast1$lower[,2]+forecast1$upper[,2])/2 ^ SyntaxError: invalid syntax

Question

delta <- (forecast1$lower[,2]+forecast1$upper[,2])/2

predicted_21 <- data.frame(date=seq(from=18476,by=1,length=21),new_deaths=delta)
original <- data.frame(date=as.numeric(dat_INDIA_Analysis$date),new_deaths=c(0,stationary_data))
z <- rbind(original,predicted_21)
z$date <- as.Date(z$date)

while running this part on kaggle i was getting error in the first line : forecast1: Any "(" was not closedPylance "forecast1" is not definedPylancereportUndefinedVariable