fix crash

PadelClub/Extensions/Tournament+Extensions.swift

@@ -43,7 +43,7 @@ extension Tournament {
     }
 
     func addTeam(_ players: Set<PlayerRegistration>, registrationDate: Date? = nil, name: String? = nil) -> TeamRegistration {
-        let team = TeamRegistration(tournament: id, registrationDate: registrationDate, name: name)
+        let team = TeamRegistration(tournament: id, registrationDate: registrationDate ?? Date(), name: name)
         team.setWeight(from: Array(players), inTournamentCategory: tournamentCategory)
         players.forEach { player in
             player.teamRegistration = team.id
@@ -76,7 +76,7 @@ extension Tournament {
         guard let tournamentStore = self.tournamentStore else { return }
 
         let teams = (0..<count).map { _ in
-            let team = TeamRegistration(tournament: id)
+            let team = TeamRegistration(tournament: id, registrationDate: Date())
             team.setWeight(from: [], inTournamentCategory: self.tournamentCategory)
             return team
         }
@@ -90,7 +90,7 @@ extension Tournament {
 
     func addWildCard(_ count: Int, _ type: MatchType) {
         let wcs = (0..<count).map { _ in
-            let team = TeamRegistration(tournament: id)
+            let team = TeamRegistration(tournament: id, registrationDate: Date())
             if type == .bracket {
                 team.wildCardBracket = true
             } else {