Manager Thomas Frank says Tottenham Hotspur's players and supporters "need each other" and that the club is "nothing without the fans".
Fans at Tottenham Hotspur Stadium booed goalkeeper Guglielmo Vicario after his mistake led to Fulham's second goal in Saturday's 2-1 defeat - Spurs' 10th home league loss of 2025.
AdvertisementAdvertisementAdvertisementThe Dane said after the defeat that those who booed Vicario "can't be true Tottenham fans" and called their actions "completely unacceptable".
Tottenham's only Premier League home win under Frank, who joined from Brentford in the summer, was the opening-weekend fixture against Burnley.
Their poor home form has led to Tottenham having just 18 points from 13 games to sit 12th in the league table.
Speaking before his side face Newcastle United, who sit directly below them, on Tuesday (20:15 GMT) at St James' Park, Frank said he understood the disappointment of fans.
"As I said after the game I completely understand the frustration," he said.
AdvertisementAdvertisementAdvertisement"If you don't win there will always be a frustration. That is normal.
"Especially as we haven't won as much as we would have wanted to at home, not only this year but the last long period. So the frustration grows a little bit more.
"We are nothing without the fans. No club is anything without the fans. Tottenham is nothing without our fantastic fans, nothing. We need each other.
"My point is that during matches is where we need each other - where I want to create a fortress.
"If you want to create a fortress, it can only be together - fans, team, me. My job is to make sure we do everything we can to perform - but can we do that together? That is where you create a difficult place to play."
AdvertisementAdvertisementAdvertisement'Vicario is good to deal with setbacks'
With Spurs already 1-0 down inside six minutes, goalkeeper Vicario came out to deal with a long ball but his weak clearance fell to Fulham's Harry Wilson, who curled a shot into the open goal from the touchline.
Moments after the goal, Spurs fans booed the Italian when the ball came to him while the team were also jeered off at half-time and at the final whistle.
"I spoke with him after the game and he said he was OK," Frank said.
"Vic is a relatively good player to deal with setbacks like that. Maybe it would've hit harder for others.
AdvertisementAdvertisementAdvertisement"If you are a goalkeeper, you know you make mistakes and how you deal with that is a big part of how good you become as a goalkeeper and a player."
Vicario apologised after the game to the fans for his mistake and the result.
"The second goal was a mistake of mine, I take responsibility for that," the 29-year-old told Sky Sports.
"I'm a big man, what can I say? We cannot be influenced by the situation in the stands. The fans have the right to do what they think."
Get news, insight and fan views on your Premier League team
All your football quizzes in one place
Premier League index
Premier League table
Premier League fixtures