Document Classes ⇒ Undefined control sequence

[Han]

hallo friends
I suddenly have a urgent problem on latex. I use texmaker and miktex. When I wrote

Code: Select all

\ my opinion is ....

, there is a mistake said "Undefined control sequence. \my". And in pdf file, all the words "my" cannot be displayed. However, previously, the program worked well with all things.

I am looking forward for reply. thank you in advanced.

[Sumalatha]

An undefined control sequence is an error thrown when the software can not identify the command! Please check if you have positioned the backslash properly!

You can refer to this page for more info: https://www.overleaf.com/learn/latex/Er ... l_sequence

Hope it helps!