installing source package 'devtools' ...
** Paket 'devtools' erfolgreich entpackt und MD5 Summen überprüft
** using staged installation
Warnung in file(file, if (append) "a" else "w")
kann Datei 'C:/Users/Julia Hdndel/Documents/R/win-library/3.6/00LOCK-devtools/00new/devtools/DESCRIPTION' nicht öffnen: No such file or directory
Error in file(file, if (append) "a" else "w") :
kann Verbindung nicht öffnen
ERROR: installing package DESCRIPTION failed for package 'devtools'
removing 'C:/Users/Julia Händel/Documents/R/win-library/3.6/devtools'
Warning in install.packages :
installation of package ‘devtools’ had non-zero exit status
The downloaded source packages are in
‘C:\Users\Julia Händel\AppData\Local\Temp\RtmpMvATi0\downloaded_packages’
installing source package 'devtools' ...
** Paket 'devtools' erfolgreich entpackt und MD5 Summen überprüft
** using staged installation
Warnung in file(file, if (append) "a" else "w")
kann Datei 'C:/Users/Julia Hdndel/Documents/R/win-library/3.6/00LOCK-devtools/00new/devtools/DESCRIPTION' nicht öffnen: No such file or directory
Error in file(file, if (append) "a" else "w") :
kann Verbindung nicht öffnen
ERROR: installing package DESCRIPTION failed for package 'devtools'
removing 'C:/Users/Julia Händel/Documents/R/win-library/3.6/devtools'
Warning in install.packages :
installation of package ‘devtools’ had non-zero exit status
The downloaded source packages are in
‘C:\Users\Julia Händel\AppData\Local\Temp\RtmpsHo7Qy\downloaded_packages’
It is in Spanish but I think you can get the idea. Right-click on the RStudio icon, and select "Run as administrator" or something similar depending on your OS language.