I have had this problem in the past as well. I can't remember the solution though.
I did find this similar thread though: Can't install tinytex via install_tinytex() - #8 by cderv
I have had this problem in the past as well. I can't remember the solution though.
I did find this similar thread though: Can't install tinytex via install_tinytex() - #8 by cderv