Here the relevant citation:
The formation of so-called “non-neutralizing antibodies” can lead to an exaggerated immune reaction, especially when the test person is confronted with the real, “wild” virus after vaccination. This so-called antibody-dependent amplification, ADE, has long been known from experiments with corona vaccines in cats, for example. In the course of these studies all cats that initially tolerated the vaccination well died after catching the wild virus.
Some claim the mRNA antibodies are neutralizing and sterilizing - I suspect that is impossible to prove given the data we have.