diff --git a/lib/Skeleton/Transaction/Log.php b/lib/Skeleton/Transaction/Log.php
index 5eda3c1..18d7147 100644
--- a/lib/Skeleton/Transaction/Log.php
+++ b/lib/Skeleton/Transaction/Log.php
@@ -89,8 +89,7 @@ public static function get_last_successful() {
 	 * Create log.
 	 */
 	public static function create(
-		\Transaction $transaction, bool $failed, string $output = '', ?\Throwable $t = null,
-		?string $date = null
+		\Transaction $transaction, bool $failed, string $output = '', ?string $date = null
 		): self {
 
 		$log = new self();
@@ -98,10 +97,6 @@ public static function create(
 		$log->failed = $failed;
 		$log->output = $output;
 
-		if (isset($t) === true) {
-			$log->exception = print_r($t, true);
-		}
-
 		if ($date !== null) {
 			$log->created = (new \DateTime($date))->format('Y-m-d H:i:s');
 		}
diff --git a/lib/Skeleton/Transaction/Retry.php b/lib/Skeleton/Transaction/Retry.php
index 32f6bde..d89ede2 100644
--- a/lib/Skeleton/Transaction/Retry.php
+++ b/lib/Skeleton/Transaction/Retry.php
@@ -23,17 +23,15 @@ trait Retry {
 	 * Retry transaction after a specified time (default: 15 minutes)
 	 *
 	 * @access public
-	 * @param \Exception $exception
 	 * @param string $output
 	 * @param string $next_retry
 	 */
-	public function retry(\Exception $exception = null, $output = null, $next_retry = '+15 minutes') {
+	public function retry($output = null, $next_retry = '+15 minutes') {
 		if (self::$max_attempts > 0 && $this->retry_attempt >= self::$max_attempts) {
-			echo $output;
-			throw $exception;
+			throw new \Exception($output);
 		}
 
-		Log::create($this, true, $output, $exception);
+		Log::create($this, true, $output);
 
 		$this->retry_attempt++;
 		$this->schedule($next_retry);
@@ -43,18 +41,16 @@ public function retry(\Exception $exception = null, $output = null, $next_retry
 	 * Retry transaction using an incremental time algorithm
 	 *
 	 * @access public
-	 * @param \Exception $exception
 	 * @param string $output
 	 * @param int $exp
 	 * @param string $unit
 	 */
-	public function retry_incremental(\Exception $exception = null, $output = null, $exp = 2, $unit = 'minutes') {
+	public function retry_incremental($output = null, $exp = 2, $unit = 'minutes') {
 		if (self::$max_attempts > 0 && $this->retry_attempt >= self::$max_attempts) {
-			echo $output;
-			throw $exception;
+			throw new \Exception($output);
 		}
 
-		Log::create($this, true, $output, $exception);
+		Log::create($this, true, $output);
 
 		$this->retry_attempt++;
 		$this->schedule(pow($this->retry_attempt, $exp) . ' ' . $unit);
diff --git a/lib/Skeleton/Transaction/Transaction.php b/lib/Skeleton/Transaction/Transaction.php
index d3f4c7e..352ea2d 100644
--- a/lib/Skeleton/Transaction/Transaction.php
+++ b/lib/Skeleton/Transaction/Transaction.php
@@ -209,7 +209,7 @@ public function unlock() {
 	 * @access public
 	 */
 	public function mark_failed($output, $exception, $date = null) {
-		Log::create($this, true, $output, $exception, $date);
+		Log::create($this, true, print_r($exception, true), $date);
 
 		$this->failed = true;
 		$this->completed = true;
@@ -229,8 +229,8 @@ public function mark_failed($output, $exception, $date = null) {
 	 * @param string $date
 	 */
 	public function mark_completed($output, $date = null) {
-		Log::create($this, false, $output, null, $date);
-		
+		Log::create($this, false, $output, $date);
+
 		// Don't mark this transaction as completed if it has been rescheduled.
 		if ($this->rescheduled) {
 			return;