Dark matter could be due to some fundamental mathematical or measurement error that is deep enough to cross multiple independent research efforts. However given the lack of evidence for it, such an error seems unlikely but not unthinkable.
As I said, it would be a huge coincidence. And no, this could not be due to a measurement error for the reason I already states: there are numerouse indpenedent observations, of completley different consequences of dark matter that all point to the same thing. At this point you can safely say it's statistically impossible to chalk this up to measurement error. I will concede that is possible that it could be due to an error in our understanding of the laws of physics at such large scales but the current evidence does not favor this conclusion.
