I used Overleaf for writing Latex document, but after compiling compete I got the following error

Package inputenc Error: Unicode character ِ (U+0650)
(inputenc)                not set up for use with LaTeX.
See the inputenc package documentation for explanation.
Type  H <return>  for immediate help.

l.278 ِ
        According to these variables, the target force $\bm{f}_{target}(s_q)...
You may provide a definition with \DeclareUnicodeCharacter

My document is written in English language and contains mathematical equations. I tried different solutions but the same error appeared to me. Here is all the packages used

  • You should really try to produce a minimal working example (MWE), otherwise, nobody could help you... Just as a blind guess, you managed to put into your file an Arabic Kasra somewhere... if you really need it (for example in a bibliography entry) I think that you need to switch to a full unicode engine like lualatex or xelatex.
    – Rmano
    Commented Mar 30, 2020 at 8:00
  • 3
    As mentioned, please provide a full (but minimal) example that gives this error. You say you write in English, but you may by accident have pasted in some arabic character.
    – daleif
    Commented Mar 30, 2020 at 8:06

1 Answer 1


In your log:

l.278 ِ
        According to these variables, the target force $\bm{f}_{target}(s_q)...

You have an Arabic Kasra symbol just before the uppercase A in line 278.

enter image description here

Remove it...

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