我收到此错误：找不到函数“%>%”

Question

R 无法识别管道函数，即使我安装了 dplyr。我在网上找到的所有内容都说要安装 dpylr，但这对我的情况根本没有帮助。

这是我的代码块：

factor_vars <- small_vdem %>% 
            mutate(
            democracy = factor(e_boix_regime, 
               labels = c("Autocracy", "Democracy")), # levels used when coding nomial variable to factor
            conflict =  factor(e_civil_war, 
              labels = c("Peace", "War")), #labels used when recoding quantitative variable to factor
            gdp_grow = factor(if_else(small_vdem$e_migdpgro > mean(small_vdem$e_migdpgro), "High", "Low")
              ))

任何帮助将不胜感激。