Undefined array key "t"... (if exists tag "x=" without tag "t=")

.gitignore

@@ -0,0 +1,2 @@
+vendor/
+composer.lock

.php_cs

@@ -0,0 +1,46 @@
+<?php
+return PhpCsFixer\Config::create()
+    ->setRiskyAllowed(true)
+    ->setRules([
+        '@Symfony' => true,
+        '@Symfony:risky' => true,
+        'array_syntax' => ['syntax' => 'short'],
+        'binary_operator_spaces' => false,
+        'cast_spaces' => single,
+        'concat_space' => ['spacing' => 'one'],
+        'heredoc_to_nowdoc' => true,
+        'method_argument_space' => true,
+        'no_extra_consecutive_blank_lines' => [
+            'break',
+            'continue',
+            'extra',
+            'return',
+            'throw',
+            'use',
+            'parenthesis_brace_block',
+            'square_brace_block',
+            'curly_brace_block'
+        ],
+        'no_php4_constructor' => true,
+        'no_short_echo_tag' => true,
+        'no_unreachable_default_argument_value' => true,
+        'no_useless_else' => true,
+        'no_useless_return' => true,
+        'ordered_imports' => true,
+        'php_unit_fqcn_annotation' => false,
+        'phpdoc_add_missing_param_annotation' => true,
+        'phpdoc_order' => true,
+        'phpdoc_summary' => false,
+        'semicolon_after_instruction' => true,
+        'simplified_null_return' => true,
+        'native_function_invocation' => false,
+        'yoda_style' => false,
+        'no_break_comment' => false,
+        'native_constant_invocation' => false,
+    ])
+    ->setFinder(
+        PhpCsFixer\Finder::create()
+            ->in(__DIR__ . '/src')
+            ->in(__DIR__ . '/test')
+    )
+;