diff --git a/app/__init__.py b/app/__init__.py
index 962cc542..e9953eec 100644
--- a/app/__init__.py
+++ b/app/__init__.py
@@ -1,6 +1,7 @@
 # -*- coding: UTF-8 -*
 # pylint: disable=invalid-name
 
+import base64
 import datetime
 import os
 import socket
@@ -69,13 +70,19 @@ def handle_access_denied(exc):
 def internal_server_error(exc):
     """Bugs scodoc, erreurs 500"""
     # note that we set the 500 status explicitly
+    from app.scodoc import sco_utils as scu
+
     return (
         render_template(
             "error_500.html",
             SCOVERSION=sco_version.SCOVERSION,
             date=datetime.datetime.now().isoformat(),
             exc=exc,
+            traceback_str_base64=base64.urlsafe_b64encode(
+                traceback.format_exc().encode(scu.SCO_ENCODING)
+            ).decode(scu.SCO_ENCODING),
             request_url=request.url,
+            scu=scu,
         ),
         500,
     )
diff --git a/app/scodoc/sco_dump_db.py b/app/scodoc/sco_dump_db.py
index fd0b15c0..94cf73a0 100644
--- a/app/scodoc/sco_dump_db.py
+++ b/app/scodoc/sco_dump_db.py
@@ -46,10 +46,12 @@ pg_dump SCORT | psql ANORT
 
 
 """
-import os
+import base64
 import fcntl
-import subprocess
+import os
 import requests
+import subprocess
+import traceback
 
 from flask import g, request
 from flask_login import current_user
@@ -64,8 +66,14 @@ from app.scodoc.sco_exceptions import ScoValueError
 SCO_DUMP_LOCK = "/tmp/scodump.lock"
 
 
-def sco_dump_and_send_db(message: str = "", request_url: str = ""):
+def sco_dump_and_send_db(
+    message: str = "", request_url: str = "", traceback_str_base64: str = ""
+):
     """Dump base de données et l'envoie anonymisée pour debug"""
+    breakpoint()
+    traceback_str = base64.urlsafe_b64decode(traceback_str_base64).decode(
+        scu.SCO_ENCODING
+    )
     # get current (dept) DB name:
     cursor = ndb.SimpleQuery("SELECT current_database()", {})
     db_name = cursor.fetchone()[0]
@@ -92,7 +100,7 @@ def sco_dump_and_send_db(message: str = "", request_url: str = ""):
         _anonymize_db(ano_db_name)
 
         # Send
-        r = _send_db(ano_db_name, message, request_url)
+        r = _send_db(ano_db_name, message, request_url, traceback_str=traceback_str)
         code = r.status_code
 
     finally:
@@ -152,7 +160,9 @@ def _get_scodoc_serial():
         return 0
 
 
-def _send_db(ano_db_name: str, message: str = "", request_url: str = ""):
+def _send_db(
+    ano_db_name: str, message: str = "", request_url: str = "", traceback_str: str = ""
+):
     """Dump this (anonymized) database and send it to tech support"""
     log(f"dumping anonymized database {ano_db_name}")
     try:
@@ -164,7 +174,7 @@ def _send_db(ano_db_name: str, message: str = "", request_url: str = ""):
         raise ScoValueError(
             f"erreur lors de l'anonymisation de la base {ano_db_name}"
         ) from e
-
+    log(f"traceback_str={traceback_str}")
     log("uploading anonymized dump...")
     files = {"file": (ano_db_name + ".dump", dump)}
     try:
@@ -180,9 +190,11 @@ def _send_db(ano_db_name: str, message: str = "", request_url: str = ""):
                 "sent_by": sco_users.user_info(str(current_user))["nomcomplet"],
                 "sco_version": sco_version.SCOVERSION,
                 "sco_fullversion": scu.get_scodoc_version(),
+                "traceback_str": traceback_str,
             },
         )
     except requests.exceptions.ConnectionError as exc:
+        log("ConnectionError: Impossible de joindre le serveur d'assistance")
         raise ScoValueError(
             """
         Impossible de joindre le serveur d'assistance (scodoc.org).
diff --git a/app/scodoc/sco_utils.py b/app/scodoc/sco_utils.py
index 247788b1..c3d189a9 100644
--- a/app/scodoc/sco_utils.py
+++ b/app/scodoc/sco_utils.py
@@ -369,6 +369,8 @@ SCO_USER_MANUAL = "https://scodoc.org/GuideUtilisateur"
 SCO_ANNONCES_WEBSITE = "https://listes.univ-paris13.fr/mailman/listinfo/scodoc-annonces"
 SCO_DEVEL_LIST = "scodoc-devel@listes.univ-paris13.fr"
 SCO_USERS_LIST = "notes@listes.univ-paris13.fr"
+SCO_LISTS_URL = "https://scodoc.org/ListesDeDiffusion/"
+SCO_DISCORD_ASSISTANCE = "https://discord.gg/ybw6ugtFsZ"
 
 # Mails avec exceptions (erreurs) anormales envoyés à cette adresse:
 # mettre '' pour désactiver completement l'envois de mails d'erreurs.
diff --git a/app/templates/error_500.html b/app/templates/error_500.html
index 4e77aa63..dffc113c 100644
--- a/app/templates/error_500.html
+++ b/app/templates/error_500.html
@@ -3,6 +3,7 @@
 {% import 'bootstrap/wtf.html' as wtf %}
 
 {% block title %}Une erreur est survenue !{% endblock %}
+
 {% block app_content %}
 <h1>Une erreur est survenue !</h1>
 <p>Oups...</tt> <span style="color:red;"><b>ScoDoc version
@@ -11,25 +12,32 @@
 <p><tt style="font-size:60%">{{date}}</tt></p>
 
 <p> Si le problème persiste, contacter l'administrateur de votre site,
-    ou écrire la liste "notes" <a href="mailto:notes@listes.univ-paris13.fr">notes@listes.univ-paris13.fr</a> en
-    indiquant la version du logiciel.
+    ou <b>l'assistance sur <a href="{{ scu.SCO_DISCORD_ASSISTANCE 
+    }}">le canal Discord</a></b>.
 </p>
 {% if 'scodoc_dept' in g %}
-    <p>Pour aider les développeurs à corriger le problème, nous vous suggérons d'envoyer les données 
-    sur votre configuration:
-    <form method="POST" action="{{ url_for( 'scolar.sco_dump_and_send_db', scodoc_dept=g.scodoc_dept ) }}">
+    <p>Pour aider les développeurs à corriger le problème, nous vous 
+    suggérons d'envoyer les données anonymisées sur votre configuration:
+    <form method="POST" action="{{ url_for( 'scolar.sco_dump_and_send_db', 
+        scodoc_dept=g.scodoc_dept ) }}">
     <input type="hidden" name="request_url" value="{{request_url}}">
+    <input type="hidden" name="traceback_str_base64" value="{{traceback_str_base64}}">
     <input type="submit" value="Envoyer données assistance">
     <div>Message optionnel: </div>
     <textarea name="message" cols="40" rows="4"></textarea>
-
+    
     </form>
     </p>
 {% endif %}
-<p>Pour plus d'informations sur les listes de diffusion <a href="https://scodoc.org/ListesDeDiffusion/">voir
-        cette page</a>.
+<p>Vous pouvez aussi envoyer un mail à la liste "notes" 
+    <a href="mailto:{{scu.SCO_USERS_LIST}}">{{scu.SCO_USERS_LIST}}</a>
+</p>
+<p>Pour plus d'informations sur les listes de diffusion 
+    <a href="{{ scu.SCO_LISTS_URL }}">voir cette page</a>.
 </p>
 
-<p><a href="{{ url_for('scodoc.index') }}">retour à la page d'accueil</a></p>
+<p>
+    <a href="{{ url_for('scodoc.index') }}">retour à la page d'accueil</a>
+</p>
 
 {% endblock %}
\ No newline at end of file
diff --git a/app/views/scolar.py b/app/views/scolar.py
index b1f04c6a..ffd5a080 100644
--- a/app/views/scolar.py
+++ b/app/views/scolar.py
@@ -2282,10 +2282,12 @@ def stat_bac(formsemestre_id):
 @scodoc
 @permission_required(Permission.ScoView)
 @scodoc7func
-def sco_dump_and_send_db(message="", request_url=""):
+def sco_dump_and_send_db(message="", request_url="", traceback_str_base64=""):
     "Send anonymized data to supervision"
 
-    status_code = sco_dump_db.sco_dump_and_send_db(message, request_url)
+    status_code = sco_dump_db.sco_dump_and_send_db(
+        message, request_url, traceback_str_base64=traceback_str_base64
+    )
     H = [html_sco_header.sco_header(page_title="Assistance technique")]
     if status_code == requests.codes.INSUFFICIENT_STORAGE:  # pylint: disable=no-member
         H.append(