fix

src/main/java/com/sasiedzi/event/config/SecurityConfiguration.java

@@ -120,7 +120,7 @@ public class SecurityConfiguration {
                     .requestMatchers(mvc.pattern("/management/**")).hasAuthority(AuthoritiesConstants.ADMIN)
             )
             .rememberMe(
-                rememberMe -> rememberMe.rememberMeServices(rememberMeServices()).key("remember-me-cookie-key32342ff") // Klucz do szyfrowania tokenu
+                rememberMe -> rememberMe.rememberMeServices(rememberMeServices()) // Klucz do szyfrowania tokenu
             )
             .oauth2Login(oauth2 ->
                 oauth2
@@ -134,7 +134,10 @@ public class SecurityConfiguration {
 
     @Bean
     public RememberMeServices rememberMeServices() {
-        TokenBasedRememberMeServices rememberMeServices = new TokenBasedRememberMeServices("remember-me-key", userDetailsService());
+        TokenBasedRememberMeServices rememberMeServices = new TokenBasedRememberMeServices(
+            "remember-me-cookie-key32342ff",
+            userDetailsService()
+        );
         rememberMeServices.setTokenValiditySeconds(60 * 60 * 24 * 170);
         rememberMeServices.setAlwaysRemember(true);
         // Ustawienie czasu ważności tokenu na 170 dni

src/main/java/com/sasiedzi/event/domain/TransactionItemComparator.java

@@ -11,6 +11,7 @@ public class TransactionItemComparator implements Comparator<TransactionItem> {
         if (item1 == null && item2 == null) return 0;
         if (item1 == null) return -1;
         if (item2 == null) return 1;
+        if (item1.getId().equals(item2.getId())) return 0;
 
         // Teraz porównujemy pola userAccount
         return compareUserAccounts(item1.getUserAccount(), item2.getUserAccount());

src/main/java/com/sasiedzi/event/domain/UserAccountComparator.java

@@ -22,6 +22,7 @@ public class UserAccountComparator implements Comparator<UserAccount> {
         if (ua1 == null && ua2 == null) return 0;
         if (ua1 == null) return -1;
         if (ua2 == null) return 1;
+        if (ua1.getId().equals(ua2.getId())) return 0;
 
         String name1 = ua1.getName();
         String name2 = ua2.getName();