diff --git a/bots/src/config.ts b/bots/src/config.ts
index 02495912..8f2bfcca 100644
--- a/bots/src/config.ts
+++ b/bots/src/config.ts
@@ -2,7 +2,9 @@ import { LCDClient } from '@initia/initia.js';
 import * as dotenv from 'dotenv';
 
 const envFile =
-  ( process.env.NODE_ENV === 'test' || !process.env.WORKER_NAME ) ? `.env` : `.env.${process.env.WORKER_NAME}`;
+  process.env.NODE_ENV === 'test' || !process.env.WORKER_NAME
+    ? `.env`
+    : `.env.${process.env.WORKER_NAME}`;
 
 console.log('activate ', envFile);
 dotenv.config({ path: envFile });
diff --git a/bots/src/lib/logger.ts b/bots/src/lib/logger.ts
index e919c996..cf9c0d19 100644
--- a/bots/src/lib/logger.ts
+++ b/bots/src/lib/logger.ts
@@ -1,69 +1,37 @@
 import * as winston from 'winston';
 import * as DailyRotateFile from 'winston-daily-rotate-file';
-import chalk from 'chalk';
 import { config } from 'config';
 
-function pad(input: number | string, width: number, z = '0') {
-  const n = typeof input === 'number' ? input.toString() : input;
-  return n.padStart(width, z);
-}
-
-function getDateString() {
-  const d = new Date();
-  return `${pad(d.getMonth() + 1, 2)}-${pad(d.getDate(), 2)} ${pad(
-    d.getHours(),
-    2
-  )}:${pad(d.getMinutes(), 2)}`;
-}
-
 function getLogsSubdir() {
   const d = new Date();
-  return `${d.getFullYear()}-${pad(d.getMonth() + 1, 2)}-${pad(
-    d.getDate(),
-    2
-  )}`;
+  return `${d.getFullYear()}-${String(d.getMonth() + 1).padStart(
+    2,
+    '0'
+  )}-${String(d.getDate()).padStart(2, '0')}`;
 }
 
 function createLogger(name: string) {
-  const print = winston.format.printf((info) => {
-    let level;
-
-    if (!config.USE_LOG_FILE) {
-      // Do not colorize when writing to file
-      if (info.level === 'error') {
-        level = chalk.red(info.level.toUpperCase());
-      } else if (info.level === 'warn') {
-        level = chalk.yellow(info.level.toUpperCase());
-      } else {
-        level = chalk.green(info.level.toUpperCase());
-      }
-    }
+  const formats = [winston.format.errors({ stack: true })];
 
-    const message = info.stack
-      ? `${info.message}\n${info.stack}`
-      : info.message;
-
-    const log = `${getDateString()} [${
-      level ? level : info.level
-    } - ${name}]: ${message}`;
+  if (!config.USE_LOG_FILE) {
+    formats.push(winston.format.colorize());
+  }
 
-    return log;
-  });
+  formats.push(
+    winston.format.timestamp(),
+    winston.format.printf((info) => {
+      return `${info.timestamp} [${info.level} - ${name}]: ${
+        info.stack || info.message
+      }`;
+    })
+  );
 
   const logger = winston.createLogger({
-    level: 'silly',
-    format: winston.format.combine(
-      winston.format.errors({ stack: true, stackTraces: true }),
-      print
-    ),
+    format: winston.format.combine(...formats),
     defaultMeta: { service: 'user-service' }
   });
 
   if (config.USE_LOG_FILE) {
-    //
-    // - Write to all logs with level `info` and below to `combined.log`
-    // - Write all logs error (and below) to `error.log`.
-    //
     logger.add(
       new DailyRotateFile({
         level: 'error',
@@ -71,16 +39,13 @@ function createLogger(name: string) {
         zippedArchive: true
       })
     );
-
     logger.add(
       new DailyRotateFile({
         filename: `logs/${getLogsSubdir()}/${name}_combined.log`,
         zippedArchive: true
       })
     );
-  }
-
-  if (!config.USE_LOG_FILE) {
+  } else {
     logger.add(new winston.transports.Console());
   }
 
@@ -88,6 +53,6 @@ function createLogger(name: string) {
 }
 
 export const executorLogger = createLogger('Executor');
+export const outputLogger = createLogger('Output');
 export const batchLogger = createLogger('Batch');
 export const challengerLogger = createLogger('Challenger');
-export const outputLogger = createLogger('Output');
diff --git a/bots/src/worker/bridgeExecutor/Resurrector.ts b/bots/src/worker/bridgeExecutor/Resurrector.ts
index df2f9723..dae3fa30 100644
--- a/bots/src/worker/bridgeExecutor/Resurrector.ts
+++ b/bots/src/worker/bridgeExecutor/Resurrector.ts
@@ -46,7 +46,7 @@ export class Resurrector {
       Buffer.from(failedTx.data, 'hex').toString('base64')
     );
     try {
-      await this.executor.transaction([msg])
+      await this.executor.transaction([msg]);
       await this.updateProcessed(failedTx);
     } catch (err) {
       if (this.errorCounter++ < 20) {