The referee's decision to allow the Bees' third goal hurt Stuart Attwell's reputation, according to the manager.
Goals from Yoane Wissa and Bryan Mbeumo and an own goal by Ibrahima Konate helped Brentford to a 3-1 win at the Gtech Community Stadium and move up to seventh in the premier league.
Alex Oxlade-Chamberlain had halved the deficit early in the second half but that was as close as he would get.
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The referee appealed for a foul against Mbeumo on Konate after Attwell awarded the goal.
Speaking to Sky Sports after the game, he said he didn't know what the third goal would be. When you get a push in the back, you lose control and go down.
Stuart Attwell thought it wasn't a foul and the VAR hid behind the phrase "it's not clear and obvious". You wouldn't say "no, no, no" if it was a foul. If someone asked him, he'd explain it.
The third goal is just a foul. The third goal is something I can't accept.
The officials were critical of the officials for not cracking down on foul play from attacking set pieces.
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Konate's own goal came from a corner, while Wissa had a goal ruled out for being in an ineligible position after turning the ball home from another corner.
"We played here last year and it was 3-3 and it's a very similar game, a wild game, a game we want to play," said the German.
You can't control it all the time because each corner is a huge threat. The rules are stretched in these moments.
One foul off a set-piece was whistled and it was against us, which is really funny.
We don't behave perfect but they stretch the rules in these moments. They are pushing and holding. It is difficult because of that. We could have done better there.
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They told us before the season that the refs would whistle that, but they don't do it. A foul is a hold, pushing is pushing.
You would expect the refs to whistle it if they saw it. They can't Whistle it if they don't see it.
There's a reason they're successful with offensive set-pieces and still concede a lot of defensive goals around set-pieces, because in your own box it would be a penalty.
Despite his criticism of the officials, he refused to spare his players and insisted that he was not using them as an excuse for the defeat.
I know people will say I use it as an excuse. It isn't. I think we'll do better.
I didn't want to play the game they wanted to play, but in the end it happened like that and we have to point at ourselves.
"We conceded the first goal in a moment when we should already be 2-0 up, super chances for Darwin and Kostas in front of the goal."
"But we didn't use them, we're 0-1 down and we get away with an offside goal after a set-piece again, so sloppy." We are not there when they play the ball behind the line, that is a huge point for criticism.
I'm angry that the second goal is a present. We can't do that when we're in control of the game.
After two intense games, it didn't look like the belief was there anymore.
At the half-time break, there was a concern for Klopp, with van Dijk having to leave. In the third round of the FA Cup, Wolves will be playing at home.
He said thatVirgil felt a little bit of the muscles. That is okay.
I didn't want to put myself in harms way. They were happy with that. He just felt intense.
"We told him not to risk it because he got treatment for the injury."
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The officials were praised by Thomas Frank, but he preferred to pay attention to the performance of the team.
Frank thinks we have some good referees. The VAR room has four people on it.
Konate is a strong boy. Konate won nine out of 10 times against Bryan. Excellent job to Bryan.
These players surprise me. They impress me with their effort and willingness.
It shouldn't be possible to beat the Reds, but we were able to do that.
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We are good with set-pieces. We can get in behind them even though they are very successful against us.
The way we defend is amazing. Sometimes the structure is clear but brave. It's difficult to break down. The second goal is an example of bravery and aggressiveness.
We are confident, but humble. We need to be confident that we can beat any team.
Without Ivan Toney, the game was even more impressive.
Frank said it was so impressive that they won without Ivan. He's probably ready for Bournemouth on January 14.