ipdf problems with TEX

I am new to Rstudio and i am a student, i want to export to pdf but i can't , my professor don't want to help me idk what more to do i don't understand

A new version of TeX Live has been released. If you need to install or update any LaTeX packages, you have to upgrade TinyTeX with tinytex::reinstall_tinytex(). If it fails to upgrade, you might be using a default random CTAN mirror that has not been fully synced to the main CTAN repository, and you need to wait for a few more days or use a CTAN mirror that is known to be up-to-date (see the "repository" argument on the help page ?tinytex::install_tinytex()).

tlmgr.pl: Local TeX Live (2020) is older than remote repository (2021).
Cross release updates are only supported with
update-tlmgr-latest(.sh/.exe) --update
See Upgrade - TeX Live - TeX Users Group for details.
! LaTeX Error: File `multirow.sty' not found.

! Emergency stop.
<read *>

Error: LaTeX failed to compile EP1.tex. See The R package tinytex - Helper Functions to Manage TinyTeX, and Compile LaTeX Documents - Yihui Xie | 谢益辉 for debugging tips. See EP1.log for more info.
Además: Warning message:
In has_crop_tools() :
Tool(s) not installed or not in PATH: pdfcrop, ghostcript
-> As a result, figure cropping will be disabled.
Ejecución interrumpida

Try:

install.packages("tinytex")

Then:
tinytex::install_tinytex()

See:

i've already do that but nothing changes, it keeps showig up the error
i don't know what this mean, this always show up, i don't know what mean with "remote repository"

tlmgr.pl: Local TeX Live (2020) is older than remote repository (2021).
Cross release updates are only supported with
update-tlmgr-latest(.sh/.exe) --update
See Upgrade - TeX Live - TeX Users Group for details

This is an issue that happens each year during several days while mirrors are syncing.

We tried a fix in TinyTeX this year that we pushed yesterday. You can try reinstalling today.

Also, this issue will be fixed by itself soon if not already.