diff --git a/components/missions/missions-admin-panel.tsx b/components/missions/missions-admin-panel.tsx
index 4dbd8208..b4bc036b 100644
--- a/components/missions/missions-admin-panel.tsx
+++ b/components/missions/missions-admin-panel.tsx
@@ -399,10 +399,17 @@ export function MissionsAdminPanel() {
 
   // Handle mission submission
   const handleSubmitMission = async () => {
+    logger.debug('handleSubmitMission called', {
+      activeTab,
+      isLastTab: activeTab === "membres"
+    });
+    
     if (!validateMission()) {
+      logger.debug('Validation failed, returning early');
       return;
     }
     
+    logger.debug('Validation passed, setting isSubmitting to true');
     setIsSubmitting(true);
     
     try {
@@ -422,21 +429,61 @@ export function MissionsAdminPanel() {
         logo: missionData.logo // Ensure logo data is included
       };
       
+      logger.debug('Prepared mission data', {
+        hasName: !!missionSubmitData.name,
+        hasOddScope: !!missionSubmitData.oddScope,
+        hasLogo: !!missionSubmitData.logo,
+        logoType: missionSubmitData.logo ? typeof missionSubmitData.logo : 'null',
+        servicesCount: missionSubmitData.services?.length || 0,
+        profilsCount: missionSubmitData.profils?.length || 0,
+        volunteersCount: missionSubmitData.volunteers?.length || 0,
+        hasGuardians: !!(missionSubmitData.guardians && Object.keys(missionSubmitData.guardians).length > 0)
+      });
+      
+      // Test JSON serialization before sending
+      let jsonString;
+      try {
+        jsonString = JSON.stringify(missionSubmitData);
+        logger.debug('JSON.stringify successful', { jsonLength: jsonString.length });
+      } catch (jsonError) {
+        logger.error('JSON.stringify failed', {
+          error: jsonError instanceof Error ? jsonError.message : String(jsonError),
+          missionDataKeys: Object.keys(missionSubmitData)
+        });
+        throw new Error(`Failed to serialize mission data: ${jsonError instanceof Error ? jsonError.message : String(jsonError)}`);
+      }
+      
+      logger.debug('Sending fetch request to /api/missions');
       // Send to API
       const response = await fetch('/api/missions', {
         method: 'POST',
         headers: {
           'Content-Type': 'application/json',
         },
-        body: JSON.stringify(missionSubmitData),
+        body: jsonString,
+      });
+      
+      logger.debug('Fetch response received', {
+        status: response.status,
+        ok: response.ok,
+        statusText: response.statusText
       });
       
       if (!response.ok) {
         const errorData = await response.json();
+        logger.error('API returned error response', {
+          status: response.status,
+          error: errorData.error,
+          errorData
+        });
         throw new Error(errorData.error || 'Failed to create mission');
       }
       
       const data = await response.json();
+      logger.debug('Mission created successfully', {
+        missionId: data.mission?.id,
+        success: data.success
+      });
       
       toast({
         title: "Mission créée avec succès",
@@ -447,6 +494,19 @@ export function MissionsAdminPanel() {
       router.push('/missions');
       
     } catch (error) {
+      logger.error('Error creating mission', {
+        error: error instanceof Error ? error.message : String(error),
+        errorType: error instanceof Error ? error.constructor.name : typeof error,
+        missionData: {
+          hasName: !!missionData.name,
+          hasOddScope: !!missionData.oddScope,
+          hasLogo: !!missionData.logo,
+          servicesCount: selectedServices.length,
+          profilsCount: selectedProfils.length,
+          volunteersCount: volontaires.length,
+          hasGuardians: !!(gardienDuTemps && gardienDeLaParole && gardienDeLaMemoire)
+        }
+      });
       toast({
         title: "Erreur",
         description: error instanceof Error ? error.message : "Une erreur est survenue lors de la création de la mission",