\setupcolors[state=start]

\usemodule[tikz]   

\starttext

\starttikzpicture

 [node distance=4cm,

    place/.style={circle,draw=blue!50,fill=blue!20,thick,

                 inner sep=0pt,minimum size=6mm}]

    \node[place] (wat) {};

  \node[place] (wag) [below=of wat] {};

\stoptikzpicture

\stoptext

open source     > level 1, order 1, name 'cont-yes.mkiv'

system          > 

system          > ConTeXt  ver: 2020.02.17 19:36 MKIV beta  fmt: 2020.3.9  int: english/english

system          > 

system          > 'cont-new.mkiv' loaded

open source     > level 2, order 2, name '/Applications/Context/context-osx-64/tex/texmf-context/tex/context/base/mkiv/cont-new.mkiv'

system          > beware: some patches loaded from cont-new.mkiv

close source    > level 2, order 2, name '/Applications/Context/context-osx-64/tex/texmf-context/tex/context/base/mkiv/cont-new.mkiv'

system          > files > jobname 'Recuperacao', input './Recuperacao', result 'Recuperacao'

fonts           > latin modern fonts are not preloaded

languages       > language 'en' is active

open source     > level 2, order 3, name './Recuperacao.tex'

modules         > 'tikz' is loaded

open source     > level 3, order 4, name '/Applications/Context/context-osx-64/tex/texmf/tex/context/third/pgf/frontendlayer/t-tikz.tex'

loading         > ConTeXt User Module / tikz

open source     > level 4, order 5, name 't-pgf.tex'

loading         > ConTeXt User Module / pgf

open source     > level 5, order 6, name 't-pgfcor.tex'

loading         > ConTeXt User Module / pgfcor

open source     > level 6, order 7, name 't-pgfsys.tex'

loading         > ConTeXt User Module / pgfsys

open source     > level 7, order 8, name 't-pgfrcs.tex'

loading         > ConTeXt User Module / pgfrcs

open source     > level 8, order 9, name 't-pgfmod.tex'

loading         > ConTeXt User Module / pgfmodules

system          > module wrapping error in 'tikz'

close source    > level 8, order 9, name 't-pgfmod.tex'

open source     > level 8, order 10, name 'pgfutil-common.tex'

open source     > level 9, order 11, name 'pgfutil-common-lists.tex'

close source    > level 9, order 11, name 'pgfutil-common-lists.tex'

close source    > level 8, order 11, name 'pgfutil-common.tex'

open source     > level 8, order 12, name 'pgfutil-context.def'

close source    > level 8, order 12, name 'pgfutil-context.def'

open source     > level 8, order 13, name 'pgfrcs.code.tex'

tex error       > tex error on line 11 in file pgfrcs.code.tex: ! Package PGF Error: PGF requires etex in extended mode

\pgfutil@packageerror #1#2#3->\errhelp {#3}\errmessage {Package #1 Error: #2}

                                                                             

l.11   \pgfutil@packageerror{PGF}{PGF requires etex in extended mode}{}

                                                                     %

<empty file>

This error message was generated by an \errmessage command, so I can't give any

explicit help. Pretend that you're Hercule Poirot: Examine all clues, and deduce

the truth by order and method.