diff --git a/apps/data-service/src/graceful-shutdown-test.ts b/apps/data-service/src/graceful-shutdown-test.ts
index 11a052c..e4dfd28 100644
--- a/apps/data-service/src/graceful-shutdown-test.ts
+++ b/apps/data-service/src/graceful-shutdown-test.ts
@@ -49,7 +49,7 @@ const workInterval = setInterval(() => {
       try {
         await initiateShutdown();
       } catch (error) {
-        logger.error('Manual shutdown failed', { error });
+        logger.error('Manual shutdown failed', error);
         process.exit(1);
       }
     }, 2000);
diff --git a/apps/data-service/src/providers/unified.ts b/apps/data-service/src/providers/unified.ts
index 9b04220..04d8d65 100644
--- a/apps/data-service/src/providers/unified.ts
+++ b/apps/data-service/src/providers/unified.ts
@@ -136,7 +136,7 @@ export class UnifiedDataProvider implements DataProvider {
         try {
           data = await this.fetchFromQuestDB(symbol, from, to, interval);
         } catch (error) {
-          logger.warn('Failed to fetch from QuestDB, generating simulated data', { error });
+          logger.warn('Failed to fetch from QuestDB, generating simulated data', error);
           data = this.generateHistoricalData(symbol, from, to, interval);
         }
       } else {
diff --git a/apps/data-service/src/proxy-demo.ts b/apps/data-service/src/proxy-demo.ts
index 1532d88..931edd3 100644
--- a/apps/data-service/src/proxy-demo.ts
+++ b/apps/data-service/src/proxy-demo.ts
@@ -135,7 +135,7 @@ onShutdown(async () => {
     // await proxyService.shutdown();
     logger.info('✅ Proxy service cleanup completed');
   } catch (error) {
-    logger.error('❌ Proxy service cleanup failed', { error });
+    logger.error('❌ Proxy service cleanup failed', error);
   }
 });
 
@@ -182,7 +182,7 @@ demonstrateCustomProxySource()
     }, 2000);
   })
   .catch((error) => {
-    logger.error('💥 Proxy demo failed', { error });
+    logger.error('💥 Proxy demo failed', error);
     clearShutdownTimer();
     setTimeout(() => process.exit(1), 1000);
   });
diff --git a/apps/data-service/src/services/proxy.service.ts b/apps/data-service/src/services/proxy.service.ts
index d935a21..524b8c0 100644
--- a/apps/data-service/src/services/proxy.service.ts
+++ b/apps/data-service/src/services/proxy.service.ts
@@ -97,7 +97,7 @@ export class ProxyService {
       try {
         await this.scrapeProxies();
       } catch (error) {
-        this.logger.error('Error in periodic proxy refresh', {error});
+        this.logger.error('Error in periodic proxy refresh', error);
       }
     }, intervalMs);
   }
@@ -318,7 +318,7 @@ export class ProxyService {
         }
       }
     } catch (error) {
-      this.logger.error('Error updating proxy status', {error});
+      this.logger.error('Error updating proxy status', error);
     }
   }
   /**
@@ -346,7 +346,7 @@ export class ProxyService {
       this.logger.warn('No working proxies available');
       return null;
     } catch (error) {
-      this.logger.error('Error getting working proxy', {error});
+      this.logger.error('Error getting working proxy', error);
       return null;
     }
   }
@@ -371,7 +371,7 @@ export class ProxyService {
       
       return workingProxies;
     } catch (error) {
-      this.logger.error('Error getting working proxies', {error});
+      this.logger.error('Error getting working proxies', error);
       return [];
     }
   }
@@ -391,7 +391,7 @@ export class ProxyService {
       this.logger.warn('getAllProxies not fully implemented - Redis cache provider limitations');
       return proxies;
     } catch (error) {
-      this.logger.error('Error getting all proxies', {error});
+      this.logger.error('Error getting all proxies', error);
       return [];
     }
   }
@@ -424,7 +424,7 @@ export class ProxyService {
       
       return stats;
     } catch (error) {
-      this.logger.error('Error getting proxy stats', {error});
+      this.logger.error('Error getting proxy stats', error);
       return {
         total: 0,
         working: 0,
@@ -485,7 +485,7 @@ export class ProxyService {
           stillWorking: successCount 
         });
       } catch (error) {
-        this.logger.error('Error in health check', {error});
+        this.logger.error('Error in health check', error);
       }
     }, intervalMs);
   }
@@ -502,7 +502,7 @@ export class ProxyService {
       this.logger.info('Cleared proxy stats from cache');
       this.logger.warn('Full proxy data clearing not implemented due to cache provider limitations');
     } catch (error) {
-      this.logger.error('Error clearing proxy data', {error});
+      this.logger.error('Error clearing proxy data', error);
     }
   }
 
diff --git a/apps/strategy-service/src/cli/index.ts b/apps/strategy-service/src/cli/index.ts
index c69cbb5..c138cd7 100644
--- a/apps/strategy-service/src/cli/index.ts
+++ b/apps/strategy-service/src/cli/index.ts
@@ -102,7 +102,7 @@ async function runBacktest(options: CLIBacktestConfig): Promise<void> {
     await eventBus.close();
     
   } catch (error) {
-    logger.error('Backtest failed', { error });
+    logger.error('Backtest failed', error);
     process.exit(1);
   }
 }
diff --git a/libs/cache/src/providers/hybrid-cache.ts b/libs/cache/src/providers/hybrid-cache.ts
index e9173fe..2534968 100644
--- a/libs/cache/src/providers/hybrid-cache.ts
+++ b/libs/cache/src/providers/hybrid-cache.ts
@@ -185,7 +185,7 @@ export class HybridCache implements CacheProvider {
 
       return isHealthy;
     } catch (error) {
-      this.logger.error('Hybrid cache health check failed', { error });
+      this.logger.error('Hybrid cache health check failed', error);
       return false;
     }
   }
diff --git a/libs/cache/src/providers/memory-cache.ts b/libs/cache/src/providers/memory-cache.ts
index e499f8f..f8fb0e1 100644
--- a/libs/cache/src/providers/memory-cache.ts
+++ b/libs/cache/src/providers/memory-cache.ts
@@ -222,7 +222,7 @@ export class MemoryCache implements CacheProvider {
       await this.del('__health_check__');
       return result === 'ok';
     } catch (error) {
-      this.logger.error('Memory cache health check failed', { error });
+      this.logger.error('Memory cache health check failed', error);
       return false;
     }
   }
diff --git a/libs/cache/src/providers/redis-cache.ts b/libs/cache/src/providers/redis-cache.ts
index 06bc0c8..e974186 100644
--- a/libs/cache/src/providers/redis-cache.ts
+++ b/libs/cache/src/providers/redis-cache.ts
@@ -212,7 +212,7 @@ export class RedisCache implements CacheProvider {
       const pong = await this.redis.ping();
       return pong === 'PONG' && this.isConnected;
     } catch (error) {
-      this.logger.error('Redis health check failed', { error });
+      this.logger.error('Redis health check failed', error);
       return false;
     }
   }
diff --git a/libs/event-bus/src/index.ts b/libs/event-bus/src/index.ts
index fef31e9..77c3a55 100644
--- a/libs/event-bus/src/index.ts
+++ b/libs/event-bus/src/index.ts
@@ -150,7 +150,7 @@ export class EventBus extends EventEmitter {
           }
         }
       } catch (error) {
-        this.logger.error(`Failed to subscribe to event: ${eventType}`, { error });
+        this.logger.error(`Failed to subscribe to event: ${eventType}`, error);
         throw error;
       }
     }
@@ -271,7 +271,7 @@ export class EventBus extends EventEmitter {
 
       } catch (error) {
         retryCount++;
-        this.logger.error(`Error processing stream message ${msgId} (attempt ${retryCount}):`, { error });
+        this.logger.error(`Error processing stream message ${msgId} (attempt ${retryCount}):`, error);
         
         if (retryCount >= this.maxRetries) {
           await this.moveToDeadLetterQueue(msgId, fields, streamKey, groupName, error);
@@ -325,7 +325,7 @@ export class EventBus extends EventEmitter {
 
       this.logger.debug(`Claimed and processed ${claimedMessages.length} pending messages`);
     } catch (error) {
-      this.logger.error('Error claiming pending messages:', { error });
+      this.logger.error('Error claiming pending messages:', error);
     }
   }
 
@@ -409,7 +409,7 @@ export class EventBus extends EventEmitter {
           }
         }
       } catch (error) {
-        this.logger.error(`Failed to unsubscribe from event: ${eventType}`, { error });
+        this.logger.error(`Failed to unsubscribe from event: ${eventType}`, error);
       }
     }
   }
@@ -446,7 +446,7 @@ export class EventBus extends EventEmitter {
     try {
       return await this.redis.xinfo('STREAM', streamKey);
     } catch (error) {
-      this.logger.error(`Failed to get stream info for: ${eventType}`, { error });
+      this.logger.error(`Failed to get stream info for: ${eventType}`, error);
       throw error;
     }
   }
@@ -460,7 +460,7 @@ export class EventBus extends EventEmitter {
     try {
       return await this.redis.xlen(streamKey);
     } catch (error) {
-      this.logger.error(`Failed to get stream length for: ${eventType}`, { error });
+      this.logger.error(`Failed to get stream length for: ${eventType}`, error);
       return 0;
     }
   }
@@ -489,7 +489,7 @@ export class EventBus extends EventEmitter {
         id
       }));
     } catch (error) {
-      this.logger.error(`Failed to read stream history for: ${eventType}`, { error });
+      this.logger.error(`Failed to read stream history for: ${eventType}`, error);
       return [];
     }
   }
@@ -503,7 +503,7 @@ export class EventBus extends EventEmitter {
     try {
       return await this.redis.xtrim(streamKey, 'MAXLEN', '~', maxLength);
     } catch (error) {
-      this.logger.error(`Failed to trim stream: ${eventType}`, { error });
+      this.logger.error(`Failed to trim stream: ${eventType}`, error);
       return 0;
     }
   }
@@ -537,7 +537,7 @@ export class EventBus extends EventEmitter {
           }
         }
       } catch (error) {
-        this.logger.error(`Error replaying event: ${event.id}`, { error });
+        this.logger.error(`Error replaying event: ${event.id}`, error);
       }
     }
     
diff --git a/libs/logger/src/logger.ts b/libs/logger/src/logger.ts
index 19df2e6..087fa12 100644
--- a/libs/logger/src/logger.ts
+++ b/libs/logger/src/logger.ts
@@ -135,8 +135,12 @@ export class Logger {
     this.log('warn', message, metadata);
   }
 
-  error(message: string | object, metadata?: LogMetadata & { error?: any }): void {
-    const data = { ...metadata };
+  error(message: string | object, metadata?: LogMetadata & { error?: any } | unknown): void {
+    // If metadata is an Error, normalize it
+    if(metadata instanceof Error){
+      metadata = { error: metadata };
+    }
+    const data = typeof metadata === 'object' ?  { ...metadata } : { error: message } as any;
     
     // Handle any type of error automatically
     if (data.error) {
diff --git a/libs/logger/test/advanced.test.ts b/libs/logger/test/advanced.test.ts
index 2eff35d..d1e769b 100644
--- a/libs/logger/test/advanced.test.ts
+++ b/libs/logger/test/advanced.test.ts
@@ -145,7 +145,9 @@ describe('Advanced Logger Features', () => {
       const logs = loggerTestHelpers.getCapturedLogs();
       expect(logs.length).toBe(1);
       expect(logs[0].context).toBe('batch processing');
-    });    it('should handle error objects with circular references', () => {
+    });
+    
+    it('should handle error objects with circular references', () => {
       const errorWithCircular: any = { name: 'CircularError', message: 'Circular reference error' };
       // Create a simple circular reference
       errorWithCircular.self = errorWithCircular;
diff --git a/libs/logger/test/basic.test.ts b/libs/logger/test/basic.test.ts
index 2beeef9..bbb13b6 100644
--- a/libs/logger/test/basic.test.ts
+++ b/libs/logger/test/basic.test.ts
@@ -107,7 +107,7 @@ describe('Basic Logger Tests', () => {
       const error = new Error('Test error');
       error.stack = 'Error stack trace';
       
-      logger.error('Error test', { error });
+      logger.error('Error test', error);
       
       const logs = loggerTestHelpers.getCapturedLogs();
       expect(logs.length).toBe(1);
diff --git a/libs/logger/test/integration.test.ts b/libs/logger/test/integration.test.ts
index 8aaccc9..7c669ac 100644
--- a/libs/logger/test/integration.test.ts
+++ b/libs/logger/test/integration.test.ts
@@ -123,7 +123,7 @@ describe('Logger Integration Tests', () => {
       const error = new Error('Test error');
       error.stack = 'Error stack trace';
       
-      logger.error('Error occurred', { error });
+      logger.error('Error occurred', error);
       
       const logs = loggerTestHelpers.getCapturedLogs();
       expect(logs.length).toBe(1);
diff --git a/libs/postgres-client/src/client.ts b/libs/postgres-client/src/client.ts
index 1564931..4d7c74c 100644
--- a/libs/postgres-client/src/client.ts
+++ b/libs/postgres-client/src/client.ts
@@ -138,7 +138,7 @@ export class PostgreSQLClient {
     } catch (error) {
       const executionTime = Date.now() - startTime;
       this.logger.error(`Query failed after ${executionTime}ms:`, {
-        error: (error as Error).message,
+        error,
         query: text,
         params
       });
@@ -320,8 +320,8 @@ export class PostgreSQLClient {
   private setupErrorHandlers(): void {
     if (!this.pool) return;
 
-    this.pool.on('error', (err) => {
-      this.logger.error('PostgreSQL pool error:', err);
+    this.pool.on('error', (error) => {
+      this.logger.error('PostgreSQL pool error:', error);
     });
 
     this.pool.on('connect', () => {
diff --git a/libs/questdb-client/src/health.ts b/libs/questdb-client/src/health.ts
index 1261bd9..f0e662c 100644
--- a/libs/questdb-client/src/health.ts
+++ b/libs/questdb-client/src/health.ts
@@ -44,13 +44,13 @@ export class QuestDBHealthMonitor {
       try {
         await this.performHealthCheck();
       } catch (error) {
-        this.logger.error('Health check failed', { error });
+        this.logger.error('Health check failed', error);
       }
     }, intervalMs);
 
     // Perform initial health check
     this.performHealthCheck().catch(error => {
-      this.logger.error('Initial health check failed', { error });
+      this.logger.error('Initial health check failed', error);
     });
   }
 
diff --git a/libs/questdb-client/src/influx-writer.ts b/libs/questdb-client/src/influx-writer.ts
index a9da613..b03aa25 100644
--- a/libs/questdb-client/src/influx-writer.ts
+++ b/libs/questdb-client/src/influx-writer.ts
@@ -362,7 +362,7 @@ export class QuestDBInfluxWriter {
         if (attempt <= options.retryAttempts) {
           await this.sleep(options.retryDelay * attempt); // Exponential backoff
         } else {
-          throw new Error(`Failed to write to QuestDB after ${options.retryAttempts} attempts: ${error}`);
+          throw new Error(`Failed to write to QuestDB after ${options.retryAttempts} attempts: $error`);
         }
       }
     }
@@ -380,7 +380,7 @@ export class QuestDBInfluxWriter {
       try {
         await this.flush(options);
       } catch (error) {
-        this.logger.error('Scheduled flush failed', { error });
+        this.logger.error('Scheduled flush failed', error);
       }
     }, options.flushInterval);
   }
diff --git a/libs/questdb-client/src/schema.ts b/libs/questdb-client/src/schema.ts
index e74ead1..0b9eb69 100644
--- a/libs/questdb-client/src/schema.ts
+++ b/libs/questdb-client/src/schema.ts
@@ -166,7 +166,7 @@ export class QuestDBSchemaManager {
         await this.createTable(schema);
         this.logger.info(`Table ${tableName} created successfully`);
       } catch (error) {
-        this.logger.error(`Failed to create table ${tableName}`, { error });
+        this.logger.error(`Failed to create table ${tableName}`, error);
         throw error;
       }
     }
@@ -201,7 +201,7 @@ export class QuestDBSchemaManager {
       await this.client.query(sql);
       this.logger.info(`Table ${tableName} dropped`);
     } catch (error) {
-      this.logger.error(`Failed to drop table ${tableName}`, { error });
+      this.logger.error(`Failed to drop table ${tableName}`, error);
       throw error;
     }
   }
@@ -219,7 +219,7 @@ export class QuestDBSchemaManager {
       
       return result.rows.length > 0 && result.rows[0].count > 0;
     } catch (error) {
-      this.logger.error(`Error checking if table exists: ${tableName}`, { error });
+      this.logger.error(`Error checking if table exists: ${tableName}`, error);
       return false;
     }
   }
@@ -260,7 +260,7 @@ export class QuestDBSchemaManager {
       const stats = await this.getTableStats(tableName);
       this.logger.info(`Table ${tableName} stats`, stats);
     } catch (error) {
-      this.logger.error(`Failed to optimize table ${tableName}`, { error });
+      this.logger.error(`Failed to optimize table ${tableName}`, error);
       throw error;
     }
   }
@@ -280,7 +280,7 @@ export class QuestDBSchemaManager {
       
       return result.rows[0] || {};
     } catch (error) {
-      this.logger.error(`Failed to get table stats for ${tableName}`, { error });
+      this.logger.error(`Failed to get table stats for ${tableName}`, error);
       throw error;
     }
   }
@@ -293,7 +293,7 @@ export class QuestDBSchemaManager {
       await this.client.query(`TRUNCATE TABLE ${tableName}`);
       this.logger.info(`Table ${tableName} truncated`);
     } catch (error) {
-      this.logger.error(`Failed to truncate table ${tableName}`, { error });
+      this.logger.error(`Failed to truncate table ${tableName}`, error);
       throw error;
     }
   }
diff --git a/libs/vector-engine/src/index.ts b/libs/vector-engine/src/index.ts
index d7858ff..68ea128 100644
--- a/libs/vector-engine/src/index.ts
+++ b/libs/vector-engine/src/index.ts
@@ -162,7 +162,7 @@ export class VectorEngine {
         signals
       };
     } catch (error) {
-      this.logger.error('Vectorized strategy execution failed', { error });
+      this.logger.error('Vectorized strategy execution failed', error);
       throw error;
     }
   }
@@ -383,7 +383,7 @@ export class VectorEngine {
         this.logger.info(`Running vectorized backtest for strategy: ${strategy.id}`);
         results[strategy.id] = await this.executeVectorizedStrategy(data, strategy.code);
       } catch (error) {
-        this.logger.error(`Backtest failed for strategy: ${strategy.id}`, { error });
+        this.logger.error(`Backtest failed for strategy: ${strategy.id}`, error);
         // Continue with other strategies
       }
     }