Error Malformed UTF-8 data

[useronkel]

Hi again ;-) Absolute new install on new host with new db and all new!!! ;-)

With the newest commit #5f4a9c6 the csrfp plugin is doing strange things. Editing ldap settings and the following box appears:

In the Dev-Console i can see html code which says

<section class="content">
        <div class="error-page" style="width:100%;">
            <h2 class="headline text-danger">500</h2>

            <div class="error-content">
                <h3><i class="fa fa-warning text-danger"></i> Oops! ERROR NOT ALLOWED.</h3>

                <p>
                    For security reason, you have been disconnected. Click to <a href="./includes/core/logout.php?user_id=" + 1>log in</a>.
                </p>

            </div>
            <!-- /.error-content -->
        </div>
        <!-- /.error-page -->
    </section>
    <!-- /.content -->
    ```
Detected in users.queries.php with type 'get_list_of_users_in_ldap'

[oscardsi]

Same problem for me -> #3270

[Esware80]

Same error in my case. Any solution?