RStudio will not start; libicuuc issue

Hi there, ubuntu 20.04, RStudio 1.3-1093. R-4.0-3 installed and works fine from the commandline.

But Rstudio gives:

/usr/lib/rstudio/bin/rsession: error while loading shared libraries: cannot open shared object file: No such file or directory

I have tried very hard to install this libicuuc thing without success. can anyone advise?

Have you tried installing Ubuntu's libicu package?

$ sudo apt install libicu60

Hello jonathan, thanks for this. This is what happened:

hankin@cuttlefish:~ $ sudo apt install libicu60
[sudo] password for rhankin: 
Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package libicu60
rhankin@cuttlefish:~ $ 

any advice?