The decision was confirmed by Laois County Council in the last hour.
The event had already been rescheduled to September 24 to September 26th.
However, Local Councillor Paschal McEvoy says the council believes it shouldn't go ahead due to public health guidelines:
"The decision has been made following the most up to date health advice made available to the council from the Health Service Executive. Further more. It is noted that under current problems measures for the management of Covid-19 events of this nature are restricted to an attendance of 500 people on it."