Compiler cannot start "biber.exe", unsure why

Previous tex files used bibtex as a backup. I wanted to update this to biber to use a certain cite-style (apa). I have checked the download/updated on Tex Live Utility and changed the settings for commands etc in TexMaker. But when I try to run the file I get the following error message:

Error : could not start the command : "biber.exe" "abc"

MWE:

documentclass[11pt]{article}
usepackage[backend=biber,citestyle=apa,bibstyle=apa]{biblatex}
bibliography{xyz}
usepackage{endnotes}

letfootnote=endnote

begin{document}

text text text... cite{citekey}

theendnotes
{singlespacingprintbibliography}
end{document}

I have tried various strategies recommended in other posts—checking downloads, settings for compiler etc—to no avail.

Update: running biber as a standalone command works normally. The problem arises when running the LaTex/biber/LaTex cycle.