Fiverr Community Forum

Illegal character warning while uploading gig description

While uploading a gig on fiver there was a warning like “Description contains illegal Character”. I am not familiar with this. Can anyone explain what are the characters??? I can not even upload my gig properly.
or which word or character cause this type of problem.

The screenshot of the warning is here.
124974240_299102237873951_667861071969666708_n

Don’t use @#- _! etc.