If you want to be pedantic there are 2 but personally I’m not that bothered as long as the message is understood. Life’s too short for nit-picking other people’s spelling and grammar on a message board.
Calling me ‘pedantic’ and ‘nit-picking’ is missing the point; like a school child questioning an English teacher about the need for grammar. Should we ignore grammar altogether and give in to (for instance) text speak?