added stack trace to some logging

backend/services/UserService.js

@@ -89,6 +89,7 @@ class UserService {
           "Failed to send personal information changed notification",
           {
             error: emailError.message,
+            stack: emailError.stack,
             userId: user.id,
             email: user.email,
             changedFields,
@@ -138,6 +139,7 @@ class UserService {
       } catch (emailError) {
         logger.error("Failed to send notification for address creation", {
           error: emailError.message,
+          stack: emailError.stack,
           userId: user.id,
           addressId: address.id,
         });
@@ -181,6 +183,7 @@ class UserService {
       } catch (emailError) {
         logger.error("Failed to send notification for address update", {
           error: emailError.message,
+          stack: emailError.stack,
           userId,
           addressId: address.id,
         });
@@ -223,6 +226,7 @@ class UserService {
       } catch (emailError) {
         logger.error("Failed to send notification for address deletion", {
           error: emailError.message,
+          stack: emailError.stack,
           userId,
           addressId,
         });

backend/services/email/domain/RentalFlowEmailService.js

@@ -1,5 +1,6 @@
 const EmailClient = require("../core/EmailClient");
 const TemplateManager = require("../core/TemplateManager");
+const logger = require("../../../utils/logger");
 
 /**
  * RentalFlowEmailService handles rental lifecycle flow emails
@@ -997,10 +998,12 @@ class RentalFlowEmailService {
           );
         }
       } catch (emailError) {
-        console.error(
-          `Failed to send rental completion email to renter (${renter.email}):`,
-          emailError.message
-        );
+        logger.error("Failed to send rental completion email to renter", {
+          error: emailError.message,
+          stack: emailError.stack,
+          renterEmail: renter.email,
+          rentalId: rental.id
+        });
       }
 
       // Prepare owner email
@@ -1114,13 +1117,19 @@ class RentalFlowEmailService {
           );
         }
       } catch (emailError) {
-        console.error(
-          `Failed to send rental completion email to owner (${owner.email}):`,
-          emailError.message
-        );
+        logger.error("Failed to send rental completion email to owner", {
+          error: emailError.message,
+          stack: emailError.stack,
+          ownerEmail: owner.email,
+          rentalId: rental.id
+        });
       }
     } catch (error) {
-      console.error("Error sending rental completion emails:", error);
+      logger.error("Error sending rental completion emails", {
+        error: error.message,
+        stack: error.stack,
+        rentalId: rental?.id
+      });
     }
 
     return results;

backend/services/payoutService.js

@@ -1,6 +1,7 @@
 const { Rental, User, Item } = require("../models");
 const StripeService = require("./stripeService");
 const emailServices = require("./email");
+const logger = require("../utils/logger");
 const { Op } = require("sequelize");
 
 class PayoutService {
@@ -78,15 +79,18 @@ class PayoutService {
       // Send payout notification email to owner
       try {
         await emailServices.rentalFlow.sendPayoutReceivedEmail(rental.owner, rental);
-        console.log(
-          `Payout notification email sent to owner for rental ${rental.id}`
-        );
+        logger.info("Payout notification email sent to owner", {
+          rentalId: rental.id,
+          ownerId: rental.ownerId
+        });
       } catch (emailError) {
         // Log error but don't fail the payout
-        console.error(
-          `Failed to send payout notification email for rental ${rental.id}:`,
-          emailError.message
-        );
+        logger.error("Failed to send payout notification email", {
+          error: emailError.message,
+          stack: emailError.stack,
+          rentalId: rental.id,
+          ownerId: rental.ownerId
+        });
       }
 
       return {