Erreur de compilation

Bonjour,
Je n'avais jusque là aucun problème pour compiler mes documents tex en pdf mais je n'y arrive plus. C'est parti d'un document que je compilais régulièrement sans souci et qui a bloqué d'un coup, sans savoir pourquoi, ainsi que tous mes autres fichiers tex. J'ai créé un fichier de base pour tester.

\documentclass[11pt,a4paper]{article}

\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage[francais]{babel}

\begin{document}

Hello 

\end{document}

Je reçois le long message d'erreurs suivant que je n'arrive pas à déchiffrer...

LOG FILE :
This is pdfTeX, Version 3.14159265-2.6-1.40.19 (MiKTeX 2.9.6800 64-bit) 
(preloaded format=pdflatex 2019.5.4) 4 MAY 2019 17:10
entering extended mode
**./essai.tex
(essai.tex
LaTeX2e <2018-04-01> patch level 5
("C:\Users\Aloha!\AppData\Local\Programs\MiKTeX 2.9\tex\latex\base\article.cls"
Document Class: article 2014/09/29 v1.4h Standard LaTeX document class
("C:\Users\Aloha!\AppData\Local\Programs\MiKTeX 2.9\tex\latex\base\size11.clo"
File: size11.clo 2014/09/29 v1.4h Standard LaTeX file (size option)
)
\c@part=\count80
\c@section=\count81
\c@subsection=\count82
\c@subsubsection=\count83
\c@paragraph=\count84
\c@subparagraph=\count85
\c@figure=\count86
\c@table=\count87
\abovecaptionskip=\skip41
\belowcaptionskip=\skip42
\bibindent=\dimen102
)
("C:\Users\Aloha!\AppData\Local\Programs\MiKTeX 2.9\tex\latex\base\inputenc.sty
"
Package: inputenc 2018/04/06 v1.3b Input encoding file
\inpenc@prehook=\toks14
\inpenc@posthook=\toks15
)
("C:\Users\Aloha!\AppData\Local\Programs\MiKTeX 2.9\tex\latex\base\fontenc.sty"
Package: fontenc 2017/04/05 v2.0i Standard LaTeX package
("C:\Users\Aloha!\AppData\Local\Programs\MiKTeX 2.9\tex\latex\base\t1enc.def"
File: t1enc.def 2017/04/05 v2.0i Standard LaTeX file
LaTeX Font Info: Redeclaring font encoding T1 on input line 48.
)) ("C:\Users\Aloha!\AppData\Local\Programs\MiKTeX 2.9\tex\generic\babel\babel.
sty"
Package: babel 2018/06/05 3.22 The Babel package
("C:\Users\Aloha!\AppData\Local\Programs\MiKTeX 2.9\tex\generic\babel\switch.de
f"
File: switch.def 2018/06/05 3.22 Babel switching mechanism
)
*************************************
* Local config file bblopts.cfg used
*
("C:\Users\Aloha!\AppData\Local\Programs\MiKTeX 2.9\tex\latex\arabi\bblopts.cfg
"
File: bblopts.cfg 2005/09/08 v0.1 add Arabic and Farsi to "declared" options of
babel
)
("C:\Users\Aloha!\AppData\Local\Programs\MiKTeX 2.9\tex\generic\babel-french\fr
ancais.ldf"
Language: francais 2018/07/17 v3.5b French support from the babel system
Package francais.ldf Warning: Option `francais' for Babel is *deprecated*,
(francais.ldf) it might be removed sooner or later. Please
(francais.ldf) use `french' instead; reported on input line 31.
("C:\Users\Aloha!\AppData\Local\Programs\MiKTeX 2.9\tex\generic\babel-french\fr
ench.ldf"
Language: french 2018/07/17 v3.5b French support from the babel system
("C:\Users\Aloha!\AppData\Local\Programs\MiKTeX 2.9\tex\generic\babel\babel.def
"
File: babel.def 2018/06/05 3.22 Babel common definitions
\babel@savecnt=\count88
\U@D=\dimen103
("C:\Users\Aloha!\AppData\Local\Programs\MiKTeX 2.9\tex\generic\babel\txtbabel.
def")
\bbl@dirlevel=\count89
)
\l@acadian = a dialect from \language\l@french
\FB@nonchar=\count90
Package babel Info: Making : an active character on input line 415.
Package babel Info: Making ; an active character on input line 416.
Package babel Info: Making ! an active character on input line 417.
Package babel Info: Making ? an active character on input line 418.
\FBguill@level=\count91
\FBold@everypar=\toks16
\FB@Mht=\dimen104
\mc@charclass=\count92
\mc@charfam=\count93
\mc@charslot=\count94
\std@mcc=\count95
\dec@mcc=\count96
\c@FBcaption@count=\count97
\listindentFB=\dimen105
\descindentFB=\dimen106
\labelindentFB=\dimen107
\labelwidthFB=\dimen108
\leftmarginFB=\dimen109
\parindentFFN=\dimen110
\FBfnindent=\dimen111
)))
("C:\Users\Aloha!\AppData\Local\Programs\MiKTeX 2.9\tex\latex\carlisle\scalefnt
.sty")
("C:\Users\Aloha!\AppData\Local\Programs\MiKTeX 2.9\tex\latex\graphics\keyval.s
ty"
Package: keyval 2014/10/28 v1.15 key=value parser (DPC)
\KV@toks@=\toks17
) (essai.aux)
\openout1 = `essai.aux'.
LaTeX Font Info: Checking defaults for OML/cmm/m/it on input line 7.
LaTeX Font Info: ... okay on input line 7.
LaTeX Font Info: Checking defaults for T1/cmr/m/n on input line 7.
LaTeX Font Info: ... okay on input line 7.
LaTeX Font Info: Checking defaults for OT1/cmr/m/n on input line 7.
LaTeX Font Info: ... okay on input line 7.
LaTeX Font Info: Checking defaults for OMS/cmsy/m/n on input line 7.
LaTeX Font Info: ... okay on input line 7.
LaTeX Font Info: Checking defaults for OMX/cmex/m/n on input line 7.
LaTeX Font Info: ... okay on input line 7.
LaTeX Font Info: Checking defaults for U/cmr/m/n on input line 7.
LaTeX Font Info: ... okay on input line 7.
LaTeX Info: Redefining \degres on input line 7.
LaTeX Info: Redefining \dots on input line 7.
LaTeX Info: Redefining \up on input line 7.
[1
{C:/Users/Aloha!/AppData/Local/MiKTeX/2.9/pdftex/config/pdftex.map}] (essai.aux
) )
Here is how much of TeX's memory you used:
1720 strings out of 492969
23640 string characters out of 3126075
96132 words of memory out of 3000000
5636 multiletter control sequences out of 15000+200000
4709 words of font info for 16 fonts, out of 3000000 for 9000
1141 hyphenation exceptions out of 8191
30i,4n,31p,193b,423s stack positions out of 5000i,500n,10000p,200000b,50000s
{C:/Users/Aloha!/AppData/Local/Programs/MiKTeX 2.9/fonts/enc/dvips/cm-super/
cm-super-t1.enc}<C:/Users/Aloha!/AppData/Local/Programs/MiKTeX 2.9/fonts/type1/
public/cm-super/sfrm1095.pfb>
Output written on essai.pdf (1 page, 12715 bytes).
PDF statistics:
11 PDF objects out of 1000 (max. 8388607)
0 named destinations out of 1000 (max. 500000)
1 words of extra memory for PDF output out of 10000 (max. 10000000)

Je ne sais pas quoi faire pour compiler à nouveau mes fichiers. Auriez-vous des idées ? En vous remerciant d'avance.