Sort:  

A mi ese mensaje me llego doble.

Que será?

Coding error, might caused by "<" this thing in html and not a closed tag.

Got it. But a programmer. I have no idea but thanks 🙏

It may be due to a poor internet connection. Did you try re-submitting or re-attaching if you had an attached image?

I try a minute later and it worked... It went away

I have seen it in the past but have no idea 🤷‍♀️

It went away

May be the net is slow. Because I too get this.

It went away fast