Child process error (exit code 255): PHP Deprecated: _PHPStan_18cddd6e5\Nette\Neon\TokenStream::error(): Implicitly marking parameter $message as nullable is deprecated, the explicit nullable type must be used instead in phar:///home/runner/work/gif/gif/vendor/phpstan/phpstan/phpstan.phar/vendor/nette/neon/src/Neon/TokenStream.php on line 46 Deprecated: _PHPStan_18cddd6e5\Nette\Neon\TokenStream::error(): Implicitly marking parameter $message as nullable is deprecated, the explicit nullable type must be used instead in phar:///home/runner/work/gif/gif/vendor/phpstan/phpstan/phpstan.phar/vendor/nette/neon/src/Neon/TokenStream.php on line 46 PHP Deprecated: _PHPStan_18cddd6e5\Nette\Neon\TokenStream::error(): Implicitly marking parameter $pos as nullable is deprecated, the explicit nullable type must be used instead in phar:///home/runner/work/gif/gif/vendor/phpstan/phpstan/phpstan.phar/vendor/nette/neon/src/Neon/TokenStream.php on line 46 Deprecated: _PHPStan_18cddd6e5\Nette\Neon\TokenStream::error(): Implicitly marking parameter $pos as nullable is deprecated, the explicit nullable type must be used instead in phar:///home/runner/work/gif/gif/vendor/phpstan/phpstan/phpstan.phar/vendor/nette/neon/src/Neon/TokenStream.php on line 46 PHP Deprecated: _PHPStan_18cddd6e5\Nette\Neon\Node\BlockArrayNode::__construct(): Implicitly marking parameter $pos as nullable is deprecated, the explicit nullable type must be used instead in phar:///home/runner/work/gif/gif/vendor/phpstan/phpstan/phpstan.phar/vendor/nette/neon/src/Neon/Node/BlockArrayNode.php on line 15 Deprecated: _PHPStan_18cddd6e5\Nette\Neon\Node\BlockArrayNode::__construct(): Implicitly marking parameter $pos as nullable is deprecated, the explicit nullable type must be used instead in phar:///home/runner/work/gif/gif/vendor/phpstan/phpstan/phpstan.phar/vendor/nette/neon/src/Neon/Node/BlockArrayNode.php on line 15 PHP Deprecated: _PHPStan_18cddd6e5\Nette\Neon\Node\ArrayItemNode::__construct(): Implicitly marking parameter $pos as nullable is deprecated, the explicit nullable type must be used instead in phar:///home/runner/work/gif/gif/vendor/phpstan/phpstan/phpstan.phar/vendor/nette/neon/src/Neon/Node/ArrayItemNode.php on line 18 Deprecated: _PHPStan_18cddd6e5\Nette\Neon\Node\ArrayItemNode::__construct(): Implicitly marking parameter $pos as nullable is deprecated, the explicit nullable type must be used instead in phar:///home/runner/work/gif/gif/vendor/phpstan/phpstan/phpstan.phar/vendor/nette/neon/src/Neon/Node/ArrayItemNode.php on line 18 PHP Deprecated: _PHPStan_18cddd6e5\Nette\Neon\Node\LiteralNode::__construct(): Implicitly marking parameter $pos as nullable is deprecated, the explicit nullable type must be used instead in phar:///home/runner/work/gif/gif/vendor/phpstan/phpstan/phpstan.phar/vendor/nette/neon/src/Neon/Node/LiteralNode.php on line 22 Deprecated: _PHPStan_18cddd6e5\Nette\Neon\Node\LiteralNode::__construct(): Implicitly marking parameter $pos as nullable is deprecated, the explicit nullable type must be used instead in phar:///home/runner/work/gif/gif/vendor/phpstan/phpstan/phpstan.phar/vendor/nette/neon/src/Neon/Node/LiteralNode.php on line 22 PHP Deprecated: _PHPStan_18cddd6e5\Nette\Neon\Node\InlineArrayNode::__construct(): Implicitly marking parameter $pos as nullable is deprecated, the explicit nullable type must be used instead in phar:///home/runner/work/gif/gif/vendor/phpstan/phpstan/phpstan.phar/vendor/nette/neon/src/Neon/Node/InlineArrayNode.php on line 15 Deprecated: _PHPStan_18cddd6e5\Nette\Neon\Node\InlineArrayNode::__construct(): Implicitly marking parameter $pos as nullable is deprecated, the explicit nullable type must be used instead in phar:///home/runner/work/gif/gif/vendor/phpstan/phpstan/phpstan.phar/vendor/nette/neon/src/Neon/Node/InlineArrayNode.php on line 15 PHP Deprecated: _PHPStan_18cddd6e5\Nette\Neon\Node\EntityNode::__construct(): Implicitly marking parameter $startPos as nullable is deprecated, the explicit nullable type must be used instead in phar:///home/runner/work/gif/gif/vendor/phpstan/phpstan/phpstan.phar/vend

Process completed with exit code 1.

The following actions uses node12 which is deprecated and will be forced to run on node16: actions/checkout@v2. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/