Package inputenc Error: Unicode character (U+2005)(inputenc) not set up for use with LaTeX

Question

I got an error message when I insert a citation in my document, it says Package inputenc Error: Unicode character (U+2005)(inputenc) not set up for use with LaTeX. ...Paul, J.~C. Conesa, S.~Shleev, A.~L. De, in the .bbl file. Just like the screenshot.

Upon click the error message, I can get the following code and the issue is reported in Line 31.

providecommand*{mcitethebibliography}{thebibliography}
csname @ifundefinedendcsname{endmcitethebibliography}
{letendmcitethebibliographyendthebibliography}{}
begin{mcitethebibliography}{2}
providecommand*{natexlab}[1]{#1}
providecommand*{mciteSetBstSublistMode}[1]{}
providecommand*{mciteSetBstMaxWidthForm}[2]{}
providecommand*{mciteBstWouldAddEndPuncttrue}
  {defEndOfBibitem{unskip.}}
providecommand*{mciteBstWouldAddEndPunctfalse}
  {letEndOfBibitemrelax}
providecommand*{mciteSetBstMidEndSepPunct}[3]{}
providecommand*{mciteSetBstSublistLabelBeginEnd}[3]{}
providecommand*{EndOfBibitem}{}
mciteSetBstSublistMode{f}
mciteSetBstMaxWidthForm{subitem}
{(emph{alph{mcitesubitemcount}})}
mciteSetBstSublistLabelBeginEnd{mcitemaxwidthsubitemformspace}
{relax}{relax}

bibitem[Honda emph{et~al.}(2017)Honda, Watanabe, Hagiwara, Ida, and
  Ishihara]{HONDA2017400}
Y.~Honda, M.~Watanabe, H.~Hagiwara, S.~Ida and T.~Ishihara, emph{Applied
  Catalysis B: Environmental}, 2017, textbf{210}, 400 -- 406relax
mciteBstWouldAddEndPuncttrue
mciteSetBstMidEndSepPunct{mcitedefaultmidpunct}
{mcitedefaultendpunct}{mcitedefaultseppunct}relax
EndOfBibitem
bibitem[Jarne emph{et~al.}(2019)Jarne, Paul, Conesa, Shleev, De Lacey, and
  Pita]{doi:10.1002/celc.201900360}
C.~Jarne, L.~Paul, J.~C. Conesa, S.~Shleev, A.~L. De Lacey and M.~Pita,
  emph{ChemElectroChem}, 2019, textbf{6}, 2755--2761relax
mciteBstWouldAddEndPuncttrue
mciteSetBstMidEndSepPunct{mcitedefaultmidpunct}
{mcitedefaultendpunct}{mcitedefaultseppunct}relax
EndOfBibitem
end{mcitethebibliography}

And the BibTeX code for the citation is provided as below:

@article{doi:10.1002/celc.201900360,
author = {Jarne, Carmen and Paul, Logan and Conesa, Jose Carlos and Shleev, Sergey and De Lacey, Antonio L. and Pita, Marcos},
title = {Underpotential Photoelectrooxidation of Water by SnS2−Laccase Co-catalysts on Nanostructured Electrodes with Only Visible-Light Irradiation},
journal = {ChemElectroChem},
volume = {6},
number = {10},
pages = {2755-2761},
doi = {10.1002/celc.201900360},
url = {https://chemistry-europe.onlinelibrary.wiley.com/doi/abs/10.1002/celc.201900360},
eprint = {https://chemistry-europe.onlinelibrary.wiley.com/doi/pdf/10.1002/celc.201900360},
year = {2019}
}

And my preamble is written as below:

documentclass[12pt, a4paper]{article}
usepackage[left=1.5cm, right=1.5cm, top=1.5cm, bottom=1.5cm]{geometry}
usepackage[T1]{fontenc}
usepackage{times,mathptmx}
usepackage{amsmath}
usepackage{amsfonts}
usepackage{amssymb}
usepackage{chemformula}
usepackage{graphicx}
usepackage[numbers, super, sort & compress, comma]{natbib}
usepackage[colorlinks, citecolor=blue, linkcolor=blue, urlcolor=blue]{hyperref}
usepackage[font=normal, labelfont=bf]{caption}
usepackage{float}
usepackage{url}
usepackage{booktabs}
usepackage{titlesec}
titleformat*{section}{normalsizebfseries}
titleformat*{subsection}{normalsizebfseries}
titleformat*{subsubsection}{normalsizebfseries}
titlespacing*{section}{0pt}{0pt}{0pt}
titlespacing*{subsection}{0pt}{0pt}{0pt}
titlespacing*{subsubsection}{0pt}{0pt}{0pt}
defUrlBreaks{doAdoBdoCdoDdoEdoFdoGdoHdoIdoJ
    doKdoLdoMdoNdoOdoPdoQdoRdoSdoTdoUdoV
    doWdoXdoYdoZdo[dodo]do^do_do`doadob
    docdoddoedofdogdohdoidojdokdoldomdon
    doodopdoqdordosdotdoudovdowdoxdoydoz
    do.do@dodo/do!do_do|do;do>do]do)do,
    do?do'do+do=do#}

I'm totally not familiar with this issue so I sincerely ask for assistance from the community.

David Carlisle · Answer

U+2005 is a 1/4 em space character. It would be best to delete them and replace by normal spaces but you could do

DeclareUnicodeCharacter{2005}{hspace{0.25em}}

But don't do that, the character is between De Lacy:

U+0020 SPACE     space
  U+0044 LATIN CAPITAL LETTER D     D
  U+0065 LATIN SMALL LETTER E     e
  U+2005 FOUR-PER-EM SPACE     &emsp14; hspace{0.25em}<<<<<<<<<<<<
  U+004c LATIN CAPITAL LETTER L     L
  U+0061 LATIN SMALL LETTER A     a
  U+0063 LATIN SMALL LETTER C     c
  U+0065 LATIN SMALL LETTER E     e
  U+0079 LATIN SMALL LETTER Y     y
  U+002c COMMA     &comma; mathcomma ,
  U+0020 SPACE     space

Replace that by a normal space.

algae · Answer

In case anyone is wondering how you actually find the character (it is invisible after all), you can paste what you understand to be the problematic portion of your code here and use the regex expression
/[^x00-x7F]

to highlight non-ascii characters (try it with the OP's bibtex snippet). Better yet, since we are given a warning about which character isn't supported, you can do a vim search,
/<ctr-v>u2005

Package inputenc Error: Unicode character (U+2005)(inputenc) not set up for use with LaTeX

2 Answers

Add your own answers!

Ask a Question