TechCrunch reports that the CHP found Chariot drivers without the correct Class B drivers licenses during three separate inspections. A re-inspection was conducted on Thursday, which is likely why service has been suspended. The company tweeted that it hoped to resolve the issue quickly.

As most of you know, we had to pause our commuter service this afternoon. We again apologize and plan to resolve this disruption quickly. — Chariot (@chariot) October 20, 2017

Chariot, which also operates in other cities like Seattle, Austin, and New York City, has been looking to disrupt mass transit in San Francisco, an ambition somewhat thwarted this week when the city proposed rules to ban shuttles from driving along public transportation routes, said TechCrunch. While it's possible that Chariot will resolve the current licensing problem quickly, hopefully the company will have learned that it can't just operate without regard to local laws and regulations.