diff --git a/langs/en.json b/langs/en.json
index 46841a56f..7ba2aa0b3 100644
--- a/langs/en.json
+++ b/langs/en.json
@@ -124,6 +124,10 @@
     "sec_peer_not_in_db": "This secret peer is not present in the internal peer database",
     "stream_handle_invalid": "An invalid stream handle was provided.",
     "length_too_big": "Length is too big",
+    "string_required": "A string was expected!",
+    "waveform_must_have_100_values": "A waveform array must have 100 values!",
+    "waveform_value": "A waveform value must be between 0 and 31!",
+    "could_not_convert_object": "Could not convert object of type %s",
     "type_extract_error_id": "Could not extract type: %s with id %s, you should update MadelineProto!",
     "constructor_not_found": "Constructor not found for type: ",
     "botapi_conversion_error": "Can't convert %s to a bot API object",
diff --git a/src/Exception.php b/src/Exception.php
index 14ff7e8d1..ec865ba79 100644
--- a/src/Exception.php
+++ b/src/Exception.php
@@ -126,10 +126,10 @@ class Exception extends \Exception
             $print(Lang::$current_lang['manualAdminActionRequired']);
             $print(Lang::$current_lang['manualAdminActionRequired']);
             $print(Lang::$current_lang['manualAdminActionRequired']);
-            $print(\sprintf(Lang::$current_lang['mmapError1'], $maps));
-            $print(\sprintf(Lang::$current_lang['mmapError2'], 'echo 262144 | sudo tee /proc/sys/vm/max_map_count'));
-            $print(\sprintf(Lang::$current_lang['mmapError3'], 'echo vm.max_map_count=262144 | sudo tee /etc/sysctl.d/40-madelineproto.conf'));
-            $print(Lang::$current_lang['mmapError4']);
+            $print(\sprintf(Lang::$current_lang['mmapErrorPart1'], $maps));
+            $print(\sprintf(Lang::$current_lang['mmapErrorPart2'], 'echo 262144 | sudo tee /proc/sys/vm/max_map_count'));
+            $print(\sprintf(Lang::$current_lang['mmapErrorPart3'], 'echo vm.max_map_count=262144 | sudo tee /etc/sysctl.d/40-madelineproto.conf'));
+            $print(Lang::$current_lang['mmapErrorPart4']);
             $print(Lang::$current_lang['manualAdminActionRequired']);
             $print(Lang::$current_lang['manualAdminActionRequired']);
             $print(Lang::$current_lang['manualAdminActionRequired']);
diff --git a/src/TL/TL.php b/src/TL/TL.php
index bbe02e38b..1b9f5fc56 100644
--- a/src/TL/TL.php
+++ b/src/TL/TL.php
@@ -620,7 +620,7 @@ final class TL implements TLInterface
                     throw new Exception(Lang::$current_lang['array_invalid']);
                 }
                 if (isset($object['_'])) {
-                    throw new Exception(\sprintf(Lang::$current_lang['arrayIsRequired'], $type['subtype']));
+                    throw new Exception(\sprintf(Lang::$current_lang['array_invalid'], $type['subtype']));
                 }
                 $concat = $this->constructors->findByPredicate('vector')['id'];
                 $concat .= Tools::packUnsignedInt(\count($object));
diff --git a/src/Tools.php b/src/Tools.php
index e912bc3e3..3cc8a29f7 100644
--- a/src/Tools.php
+++ b/src/Tools.php
@@ -608,6 +608,7 @@ abstract class Tools extends AsyncTools
         'mysql_connect' => 'https://github.com/amphp/mysql',
         'fopen' => 'https://github.com/amphp/file',
         'fsockopen' => 'https://github.com/amphp/socket',
+        'pcntl_fork' => 'Tools::callFork',
         'sleep' => '$this->sleep()',
         'usleep' => '$this->sleep()',
         'proc_open' => 'https://github.com/amphp/process',