Jim,
Yo implied there was by inventing "large numbers of Labour people, including their NEC who were claiming there was a problem - there were so such numbers - you invented it.

It was and is a fact.
"The NEC are appalled by recent cases of anti-Semitic abuse. Anti-Semitism has no place in the Labour Party and is contrary to everything we stand for."
http://labourlist.org/2016/05/alice-perrys-nec-report-corbyn-fighting-prejudice-and-listening-to-voters-online/

The recent enquiry established that there was not a problem

It established that there was!
page 1
"there is too much clear evidence (going back some years) of minority hateful or ignorant attitudes and
behaviours festering within a sometimes bitter incivility of discourse. This has no place in a modern
democratic socialist party that puts equality, inclusion and human rights at its heart. Moreover, I have
heard too many Jewish voices express concern that antisemitism has not been taken seriously enough
in the Labour Party and broader Left for some years.
An occasionally toxic atmosphere is in danger of shutting down free speech within the Party rather
than facilitating it, and is understandably utilised by its opponents."