A DART is a hardware assisted memory management unit. yours is the CPU DART for the CPU to access main memory. there is also an separate I/O DART.
ANY complaint about that suggests you may have a RAM memory problem.
You should run the User diagnostic soon. The return code "no faults detected" does NOT mean "all is well". In the tiny amount of time allotted, it can find only GROSS errors.
if you bought DIRECT from Apple, not through a Reseller of any kind, you have 14 day full value refund or exchange. You should plan on taking advantage of that option if available to you. It is far less stressful than warranty repair.
it is conceivable that if you have side-loaded stuff that is VERY invasive, it might be contributing to this issue. If you contact Apple support for assistance they will want is to see the problem occur in an un-modified MacOS.
First responders are not trained to read panic reports, so you will likely have to ask for a specialist to contact you. They can read what is already posted here if you give them a hint about your avatar or the discussion Title. They NEVER take our conclusions at face value.
Genius Bar technicians are NOT trained to read panic reports, so I do not recommend a visit there unless/until it fails a diagnostic or you can replicate the problem on demand.