Caret won't install/load properly - r

when i do
install.packages(“caret”)
it appears that the package is successfully installed (R response is posted at the bottom of this text). However, when I run library(caret), I get the following error messages:
library(caret)
Error: package or namespace load failed for ‘caret’ in loadNamespace(i, c(lib.loc, .libPaths()), versionCheck = vI[[i]]):
there is no package called ‘lava’

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Why am I getting while loading' tidyverse' library?

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Please, help!
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Error when loading package "tmap" in library

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R programming, showing error

Whenever I am trying to load the tidyverse package in R it is showing the following error. How do I fix it?
library(tidyverse)
Error in loadNamespace(j <- i[[1L]], c(lib.loc, .libPaths()),
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Can't use the GUI to import datasets and certain packages will not load. I get this message. I'm stumped.
library(likert)
Loading required package: ggplot2
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I started using R. When I try to load the package Rcmdr, this error appears
Loading required package: RcmdrMisc
Loading required package: car
Error in loadNamespace(j <- i[[1L]], c(lib.loc, .libPaths()), versionCheck = vI[[j]]) :
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Please help me , I need this program for a class in college.

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