diff --git a/src/Google/Protobuf/Internal/GPBUtil.php b/src/Google/Protobuf/Internal/GPBUtil.php
index 4c1fadc..cac2a4a 100644
--- a/src/Google/Protobuf/Internal/GPBUtil.php
+++ b/src/Google/Protobuf/Internal/GPBUtil.php
@@ -462,10 +462,6 @@ public static function parseTimestamp($timestamp)
                 $nanoseconds = substr($timestamp, $periodIndex + 1, $nanosecondsLength);
                 $nanoseconds = intval($nanoseconds);
 
-                if ($nanosecondsLength < 9) {
-                    $nanoseconds = $nanoseconds * pow(10, 9 - $nanosecondsLength);
-                }
-
                 // remove the nanoseconds and preceding period from the timestamp
                 $date = substr($timestamp, 0, $periodIndex);
                 $timezone = substr($timestamp, $periodIndex + $nanosecondsLength + 1);
diff --git a/src/Google/Protobuf/Internal/Message.php b/src/Google/Protobuf/Internal/Message.php
index 21d9c98..578e606 100644
--- a/src/Google/Protobuf/Internal/Message.php
+++ b/src/Google/Protobuf/Internal/Message.php
@@ -1314,7 +1314,7 @@ public function parseFromJsonStream($input, $ignore_unknown)
         try {
             $this->mergeFromJsonArray($array, $ignore_unknown);
         } catch (\Exception $e) {
-            throw new GPBDecodeException($e->getMessage(), $e->getCode(), $e);
+            throw new GPBDecodeException($e->getMessage());
         }
     }
 
@@ -2014,56 +2014,4 @@ public function jsonByteSize()
         }
         return $size;
     }
-
-    public function __debugInfo()
-    {
-        if (is_a($this, 'Google\Protobuf\FieldMask')) {
-            return ['paths' => $this->getPaths()->__debugInfo()];
-        }
-
-        if (is_a($this, 'Google\Protobuf\Value')) {
-            switch ($this->getKind()) {
-                case 'null_value':
-                    return ['nullValue' => $this->getNullValue()];
-                case 'number_value':
-                    return ['numberValue' => $this->getNumberValue()];
-                case 'string_value':
-                    return ['stringValue' => $this->getStringValue()];
-                case 'bool_value':
-                    return ['boolValue' => $this->getBoolValue()];
-                case 'struct_value':
-                    return ['structValue' => $this->getStructValue()->__debugInfo()];
-                case 'list_value':
-                    return ['listValue' => $this->getListValue()->__debugInfo()];
-            }
-            return [];
-        }
-
-        if (is_a($this, 'Google\Protobuf\BoolValue')
-            || is_a($this, 'Google\Protobuf\BytesValue')
-            || is_a($this, 'Google\Protobuf\DoubleValue')
-            || is_a($this, 'Google\Protobuf\FloatValue')
-            || is_a($this, 'Google\Protobuf\StringValue')
-            || is_a($this, 'Google\Protobuf\Int32Value')
-            || is_a($this, 'Google\Protobuf\Int64Value')
-            || is_a($this, 'Google\Protobuf\UInt32Value')
-            || is_a($this, 'Google\Protobuf\UInt64Value')
-        ) {
-            return [
-                'value' => json_decode($this->serializeToJsonString(), true),
-            ];
-        }
-
-        if (
-            is_a($this, 'Google\Protobuf\Duration')
-            || is_a($this, 'Google\Protobuf\Timestamp')
-        ) {
-            return [
-                'seconds' => $this->getSeconds(),
-                'nanos' => $this->getNanos(),
-            ];
-        }
-
-        return json_decode($this->serializeToJsonString(), true);
-    }
 }
diff --git a/src/Google/Protobuf/Internal/RepeatedField.php b/src/Google/Protobuf/Internal/RepeatedField.php
index 3d9e66d..8f56863 100644
--- a/src/Google/Protobuf/Internal/RepeatedField.php
+++ b/src/Google/Protobuf/Internal/RepeatedField.php
@@ -238,17 +238,4 @@ public function count(): int
     {
         return count($this->container);
     }
-
-    public function __debugInfo()
-    {
-        return array_map(
-            function ($item) {
-                if ($item instanceof Message || $item instanceof RepeatedField) {
-                    return $item->__debugInfo();
-                }
-                return $item;
-            },
-            iterator_to_array($this)
-        );
-    }
 }