location of com.apple.sidebarlists.plist in High Sierra - plist

I cannot find where "com.apple.sidebarlists.plist" is in macOS High Sierra. Does anybody now where it is or what has happened to it?
com.apple.sidebarlists.plist

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Launching Rattle

I have tried launching rattle in my system, it failed every time. I am using a Mac, system details are given below:
macOS Big Sur
11.4 version
Intel core i5 processor
Why am I receiving the same error?

RStudio is damaged and cant be opened for MacOS High Sierra (version 10.13.6)

I tried downloading Rstudio-1.4.1717.dmg (macOS 10.13+) for my macOS High Sierra (version 10.13.6), I was able to download it and have it in the application but when I tried opening the RStudio from my application, the verifying toolbox with waiting bar will appear and finally it would say "RStudio is damaged and can't be opened. you should move it to the Trash".
I have tried re-downloading the RStudio multiple times and have also removed/uninstalled the old Rstudio download from the trash. I have tried restarting the computer multiple times, I have also tried updating my computer system But nothing has worked out with opening RStudio.
Please send help on how to troubleshoot issues with damaged RStudio in macOS 10.13.6.
Thank you very much!!
You will need to use an older version of Rstudio. Go to this site https://www.rstudio.com/products/rstudio/older-versions/
Your should be able to install RStudio Desktop 1.3.1093 on 10.13.6
You can open any version (included new) using High Sierra 10.13+ without install RStudio, just running by mounted volume. But if you install, you need install the compatible version.
High Sierra 10.13+ supports RStudio Desktop 1.3.1093 - "Apricot Nasturtium".
RStudio Desktop - Platform Support (MacOS)
Based From Older Versions: rstudio.com/products/rstudio/older-versions/
Version MacOS Arch
0.98.1103 10.6+ x86, x64
0.99.903 10.6+ x86, x64
1.0.153 10.6+ x86, x64
1.1.463 10.6+ x86, x64
1.2.5042 10.11+ x64
1.3.1093 10.13+ x64
1.4.1106 10.14+ x64

How can I determine and increase the memory allocated to R on a Mac

Variants of this question have been asked before (e.g., here, here, here, and here), but none of the suggested solutions works for me.
R returns an error message ("Error: vector memory exhausted (limit reached?)"), even though there is available memory on my computer (a 2019 MacBook Pro with 16 GB memory), as indicated by the Memory Pressure monitor in the Memory tab of the Activity Monitor.
I have set the memory both from the command line (using open .Renviron) and from RStudio (using usethis::edit_r_environ) , as suggested here. Neither solution works.
Has anybody found other solutions to this problem? Also, is there a way to determine, in RStudio, the maximum memory allocated? Sys.getenv() does not return this information.
I do not encounter this problem in base R -- only RStudio.
Session info:
R version 4.0.3 (2020-10-10)
Platform: x86_64-apple-darwin17.0 (64-bit)
Running under: macOS Big Sur 10.16

Install RODBC package in R with MacOS 10.13.3 - High Sierra

I've been trying to install the RODBC package in R Studio on MacOS 10.13.3 - High Sierra, but I've not succeeded yet.
I tried to follow some answers for previous versions of MacOS here on Stack, but none worked, not even this one:
how to install RODBC on macOS Sierra 10.12.4
I'm also kind of new to MacOS, so I would appreciate some simple procedure.
Thank you!

R crashes when saving a file mac OSX Sierra

Any time I try to save an image file, and lately any file at all, R crashes. I'm on Mac OS X Sierra version 10.12.6, R version 3.4.1 (2017-06-30) -- "Single Candle"
Anyone else have the same problem? How did you solve it?
I also have this intermittent issue and have experienced it for over a year, on more that one machine, on El Capitan and Sierra and with multiple versions of R.
There are some helpful suggestions here, but no solution. R freezes / hangs in Mac OS X Yosemite
I find it crashes less if I save to the default location with the default name and rename the file afterwards.

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