Sir I want some clarification regarding some signs shows on my notes

[Rajaperumal 0]

There is a red alert sign shows on my notes

I checked my upload limit it still have 31.49 MB remaining

I am unaware of this issue can you help me to clarify

What are all the possibilities to get this type of error

[jefito 5,502]

Is this a problem on Android, or some other Evernote client?

[Rajaperumal 0]

Android app sir