The remaining twelve contestants on The X Factor will have to perform again after the show had a voting glitch on Wednesday.

During the show that aired on Nov. 6, two numbers submitted for voting were shown incorrectly due to a technical error. The tech fail automatically led to the cancellation of all votes.

A show insider shared the details of how it all went down behind-the-scenes.

"The producers were told about the mistake immediately and called a meeting where they informed all the contestants what had happened," a source on the set exclusively told Radar"They had already spoken with Simon Cowell and the other judges together who all agreed with the decision that it was only fair for all the contestants to perform again and for the whole vote to be repeated.

The source shared that contestants are very nervous about having to perform again.

"Some of them are freaking out a little, but there are also some who are happy because they thought they didn't do as well as they wanted on Wednesday and now they get a second chance," the source said. "A few haven't had any sleep and some of them have been put on vocal rest because their voices are already tired. This could turn the whole competition around for some of the artists."

The acts performed songs by music legends The Commodores, The Supremes, Stevie Wonder, The Jackson 5 and The Temptations for Motown. Kelly Rowland aprpoved and described the night's music theme as "classic, magical music."

The Top 12 acts that will perform tonight are:

Boys (Paulina Rubio):

Carlito Olivero

Carlos Guevara

Tim Olstad

Girls (Demi Lovato):

Ellona Santiago,

Rion Paige

Khaya Cohen

Over 25s (Kelly Rowland):

Rachel Potter

Jeff Gutt

Lillie McCloud

Groups (Simon Cowell):

Restless Road

Alex & Sierra

Sweet Suspense

The X Factor live shows will continue at 8 p.m. EST on FOX