OK- I figured it out.
This particular problem is with the package in fedora 33 updates repository and not with the package downloaded from "https://download2.rstudio.org/server/centos7/x86_64/rstudio-server-rhel-1.4.1103-x86_64.rpm"
# dnf info rstudio-server
Last metadata expiration check: 2:02:19 ago on Thu 28 Jan 2021 12:32:21 PM EST.
Installed Packages
Name : rstudio-server
Version : 1.4.1103
Release : 1
Architecture : x86_64
Size : 549 M
Source : rstudio-server-1.4.1103-1.src.rpm
Repository : @System
From repo : @commandline
Summary : rstudio-server
License : AGPL v.3.0
Description : RStudio is a set of integrated tools designed to help you be more productive with R. It includes a console, syntax-highlighting editor that supports direct code execution, as well as tools for plotting, history, and
: workspace management.
Available Packages
Name : rstudio-server
Version : 1.4.1103
Release : 1.fc33
Architecture : x86_64
Size : 1.1 M
Source : rstudio-1.4.1103-1.fc33.src.rpm
Repository : updates
Summary : Access RStudio via a web browser
URL : https://github.com/rstudio/rstudio
License : AGPLv3 and LGPLv2+ and ASL 2.0 and MIT and BSD and ISC and W3C and MPLv1.1 and CPL and CC-BY and Public Domain
Description : RStudio is an integrated development environment (IDE) for R. It includes a
: console, syntax-highlighting editor that supports direct code execution, as
: well as tools for plotting, history, debugging and workspace management.
:
: This package provides the Server version, a browser-based interface to the RStudio IDE.
When I installed the package from the rstudio.org everything was fine. Therefore this should be brought to the attention of fedora33 rstudio-server package maintainer at redhat bugzilla. Not an issue for rstudio community.