Musk says that his private security told him that Tripp's colleague (who was living in his car begging for his job back) told him about a payment but the private security testified their investigation found no evidence. Musk himself doesn't explicitly testify that there was no evidence in that passage. I confused that section with his testimony about the lack of evidence linking Tripp to shortsellers on page 96.

So the entire claim about payment rests on the testimony of a QA technician who got fired for cause from Tesla, was living in his car and begging Tesla for his job back, a claim that Musk's own private investigator testified they could find no evidence for.