update

src/main/java/fr/eni/enchere/controllers/LoginController.java

@@ -34,9 +34,4 @@ public class LoginController {
             return "redirect:/security/login?error";
         }
     }
-
-    @GetMapping("/logout")
-    public String logout(Model modele) {
-        return "security/login";
-    }
 }

src/main/java/fr/eni/enchere/security/WebSecurityConfig.java

@@ -24,7 +24,7 @@ public class WebSecurityConfig{
                         .anyRequest().authenticated())
                 .formLogin((form) -> form.loginPage("/login").defaultSuccessUrl("/", true))
                 .logout((logout) -> logout.clearAuthentication(true).invalidateHttpSession(true)
-                        .deleteCookies("JSESSIONID").logoutSuccessUrl("/login")
+                        .deleteCookies("JSESSIONID").logoutSuccessUrl("/login?logout")
                         .logoutRequestMatcher(new AntPathRequestMatcher("/logout")).permitAll());
 
         return http.build();