diff --git a/server/analyticsDb.ts b/server/analyticsDb.ts
index d3688d6..31a2851 100644
--- a/server/analyticsDb.ts
+++ b/server/analyticsDb.ts
@@ -16,6 +16,9 @@ export async function getInscriptionsByMonth(startDate?: Date, endDate?: Date) {
   if (!db) return [];
 
   const conditions = [];
+  // Exclure les inscriptions avec dateInscription NULL
+  conditions.push(sql`${inscriptions.dateInscription} IS NOT NULL`);
+  
   if (startDate) {
     conditions.push(gte(inscriptions.dateInscription, startDate));
   }
diff --git a/server/fail2banDb.ts b/server/fail2banDb.ts
index b26282e..4066418 100644
--- a/server/fail2banDb.ts
+++ b/server/fail2banDb.ts
@@ -22,6 +22,21 @@ export interface Fail2BanStats {
  */
 export async function getFail2BanStatus(): Promise<Fail2BanStats> {
   try {
+    // Vérifier si Fail2Ban est disponible
+    try {
+      await execAsync('which fail2ban-client');
+    } catch (e) {
+      // Fail2Ban n'est pas installé (environnement sandbox), retourner des valeurs par défaut
+      console.log('[Fail2Ban] Service non disponible (environnement sandbox)');
+      return {
+        currentlyBanned: 0,
+        totalBanned: 0,
+        currentlyFailed: 0,
+        totalFailed: 0,
+        bannedIPs: [],
+      };
+    }
+
     const { stdout } = await execAsync('sudo fail2ban-client status sshd');
     
     const stats: Fail2BanStats = {
@@ -95,6 +110,15 @@ export async function unbanIP(ip: string): Promise<boolean> {
  */
 export async function getBanHistory(limit: number = 50): Promise<Array<{ ip: string; date: string; action: string }>> {
   try {
+    // Vérifier si Fail2Ban est disponible
+    try {
+      await execAsync('which fail2ban-client');
+    } catch (e) {
+      // Fail2Ban n'est pas installé (environnement sandbox)
+      console.log('[Fail2Ban] Service non disponible (environnement sandbox)');
+      return [];
+    }
+
     const { stdout } = await execAsync(`sudo grep "Ban" /var/log/fail2ban.log | tail -${limit}`);
     
     const history: Array<{ ip: string; date: string; action: string }> = [];
@@ -125,6 +149,15 @@ export async function getBanHistory(limit: number = 50): Promise<Array<{ ip: str
  */
 export async function countRecentBans(hours: number = 1): Promise<number> {
   try {
+    // Vérifier si Fail2Ban est disponible
+    try {
+      await execAsync('which fail2ban-client');
+    } catch (e) {
+      // Fail2Ban n'est pas installé (environnement sandbox)
+      console.log('[Fail2Ban] Service non disponible (environnement sandbox)');
+      return 0;
+    }
+
     const since = new Date();
     since.setHours(since.getHours() - hours);
     const sinceStr = since.toISOString().slice(0, 19).replace('T', ' ');
diff --git a/todo.md b/todo.md
index 381862f..3f27bd2 100644
--- a/todo.md
+++ b/todo.md
@@ -1080,3 +1080,9 @@
 - [x] Corriger l'erreur React "Cannot read properties of null (reading 'fonction')"
 - [x] Corriger l'erreur "Cannot convert undefined or null to object"
 - [x] Tester les corrections sur sandbox
+
+## Correction erreurs Fail2Ban et SQL DATE_FORMAT
+
+- [x] Analyser l'erreur "Impossible de récupérer le statut Fail2Ban"
+- [x] Corriger l'erreur SQL DATE_FORMAT dans getInscriptionsByMonth
+- [x] Tester les corrections sur sandbox