update to volunteer

app/internal/models/token.go

@@ -18,7 +18,7 @@ func GetCurrentUserName(r *http.Request) (string, error) {
 
     var currentUserName string
     err := DB.QueryRow(`
-        SELECT first_name || ' ' || last_name
+        SELECT first_name
         FROM users
         WHERE user_id = $1
     `, currentUserID).Scan(&currentUserName)