I saw an article whose title is the following one.
Google hits wall in Korea, says will comply with local rule.
Is there an omitted word before says, for example the subject or a conjunction?
It is a headline. They frequently sacrifice grammar for brevity. Moreover, this headline utilizes a metaphor
Google hits wall
is not grammatical and should say
Google hits a wall
That is a metaphor meaning
Google has been prevented from doing something (as though a car had collided with a stone wall and brought to a stop)
This is followed by another grammatical error: “says” should be proceeded with “and Google.”
The meaning is presumably this:
Google agrees to comply with Korea’s rule after efforts to be exempted failed.
Headlines are terrible examples of English. Read the article.