Btukfyl

i compose test file from overleaf tutorial examples as follows:

documentclass{article}

%---------------------------------------------------------------%

usepackage{filecontents}

begin{filecontents*}{sample.bib}

@article{einstein,

    author = "Albert Einstein",

    title = "{Zur Elektrodynamik bewegter K{"o}rper}. ({German})

    [{On} the electrodynamics of moving bodies]",

    journal = "Annalen der Physik",

    volume = "322",

    number = "10",

    pages = "891--921",

    year = "1905",

    DOI = "http://dx.doi.org/10.1002/andp.19053221004",

    keywords = "physics"

}



@book{dirac,

    title = {The Principles of Quantum Mechanics},

    author = {Paul Adrien Maurice Dirac},

    isbn = {9780198520115},

    series = {International series of monographs on physics},

    year = {1981},

    publisher = {Clarendon Press},

    keywords = {physics}

}



@online{knuthwebsite,

    author = "Donald Knuth",

    title = "Knuth: Computers and Typesetting",

    url  = "http://www-cs-faculty.stanford.edu/~uno/abcde.html",

    addendum = "(accessed: 01.09.2016)",

    keywords = "latex,knuth"

}

end{filecontents*}

%---------------------------------------------------------------%

usepackage[

backend=biber,

style=alphabetic,

sorting=ynt

]{biblatex}

addbibresource{sample.bib}



title{Bibliography management: texttt{biblatex} package}

author{Overleaf}

date{ }



begin{document}

maketitle

%---------------------------------------------------------------%

Using texttt{biblatex} you can display bibliography divided into sections,

depending of citation type.

Let's cite! Einstein's journal paper cite{einstein} and the Dirac's

book cite{dirac} are physics related items.

Next, textit{The LaTeX Companion} book cite{latexcompanion}, the Donald

Knuth's website cite{knuthwebsite}, textit{The Comprehensive Tex Archive

Network} (CTAN) cite{ctan} are LaTeX related items; but the others Donald

Knuth's items cite{knuth-fa,knuth-acp} are dedicated to programming.



medskip



printbibliography

end{document}

and try to learn how to use biblatex. for this i instaledbiblatex and in editor (winedt) adjust biber as backend. at compileng above mwe i imidiately obtain error:

undefined control sequence

<recently read> addbibresource



l.54     addbibresource{sample.bib} 

i try with pdfLaTeX as well with pdfLaTeXify. in both case i got the same error. i use recent 64-bit MikTeX and recent WinEDt editor.