PHP Fatal error

Hi,

this problem seems to occur on one page only so the issue should be specific to that page. if possible, can you send us the content code of the page for further inspection? thank you.

I can’t send you the content code, but we get this when we turn on debug:

Fatal error: Allowed memory size of 268435456 bytes exhausted (tried to allocate 20480 bytes) in?/www/wp-includes/class-wp-block-parser.php?on line?280

<?php
/**
 * Block Serialization Parser
 *
 * @package WordPress
 */

/**
 * Class WP_Block_Parser
 *
 * Parses a document and constructs a list of parsed block objects
 *
 * @since 5.0.0
 * @since 4.0.0 returns arrays not objects, all attributes are arrays
 */
class WP_Block_Parser {
	/**
	 * Input document being parsed
	 *
	 * @example "Pre-text\n<!-- wp:paragraph -->This is inside a block!<!-- /wp:paragraph -->"
	 *
	 * @since 5.0.0
	 * @var string
	 */
	public $document;

	/**
	 * Tracks parsing progress through document
	 *
	 * @since 5.0.0
	 * @var int
	 */
	public $offset;

	/**
	 * List of parsed blocks
	 *
	 * @since 5.0.0
	 * @var WP_Block_Parser_Block[]
	 */
	public $output;

	/**
	 * Stack of partially-parsed structures in memory during parse
	 *
	 * @since 5.0.0
	 * @var WP_Block_Parser_Frame[]
	 */
	public $stack;

	/**
	 * Parses a document and returns a list of block structures
	 *
	 * When encountering an invalid parse will return a best-effort
	 * parse. In contrast to the specification parser this does not
	 * return an error on invalid inputs.
	 *
	 * @since 5.0.0
	 *
	 * @param string $document Input document being parsed.
	 * @return array[]
	 */
	public function parse( $document ) {
		$this->document = $document;
		$this->offset   = 0;
		$this->output   = array();
		$this->stack    = array();

		while ( $this->proceed() ) {
			continue;
		}

		return $this->output;
	}

	/**
	 * Processes the next token from the input document
	 * and returns whether to proceed eating more tokens
	 *
	 * This is the "next step" function that essentially
	 * takes a token as its input and decides what to do
	 * with that token before descending deeper into a
	 * nested block tree or continuing along the document
	 * or breaking out of a level of nesting.
	 *
	 * @internal
	 * @since 5.0.0
	 * @return bool
	 */
	public function proceed() {
		$next_token = $this->next_token();
		list( $token_type, $block_name, $attrs, $start_offset, $token_length ) = $next_token;
		$stack_depth = count( $this->stack );

		// we may have some HTML soup before the next block.
		$leading_html_start = $start_offset > $this->offset ? $this->offset : null;

		switch ( $token_type ) {
			case 'no-more-tokens':
				// if not in a block then flush output.
				if ( 0 === $stack_depth ) {
					$this->add_freeform();
					return false;
				}

				/*
				 * Otherwise we have a problem
				 * This is an error
				 *
				 * we have options
				 * - treat it all as freeform text
				 * - assume an implicit closer (easiest when not nesting)
				 */

				// for the easy case we'll assume an implicit closer.
				if ( 1 === $stack_depth ) {
					$this->add_block_from_stack();
					return false;
				}

				/*
				 * for the nested case where it's more difficult we'll
				 * have to assume that multiple closers are missing
				 * and so we'll collapse the whole stack piecewise
				 */
				while ( 0 < count( $this->stack ) ) {
					$this->add_block_from_stack();
				}
				return false;

			case 'void-block':
				/*
				 * easy case is if we stumbled upon a void block
				 * in the top-level of the document
				 */
				if ( 0 === $stack_depth ) {
					if ( isset( $leading_html_start ) ) {
						$this->output[] = (array) $this->freeform(
							substr(
								$this->document,
								$leading_html_start,
								$start_offset - $leading_html_start
							)
						);
					}

					$this->output[] = (array) new WP_Block_Parser_Block( $block_name, $attrs, array(), '', array() );
					$this->offset   = $start_offset + $token_length;
					return true;
				}

				// otherwise we found an inner block.
				$this->add_inner_block(
					new WP_Block_Parser_Block( $block_name, $attrs, array(), '', array() ),
					$start_offset,
					$token_length
				);
				$this->offset = $start_offset + $token_length;
				return true;

			case 'block-opener':
				// track all newly-opened blocks on the stack.
				array_push(
					$this->stack,
					new WP_Block_Parser_Frame(
						new WP_Block_Parser_Block( $block_name, $attrs, array(), '', array() ),
						$start_offset,
						$token_length,
						$start_offset + $token_length,
						$leading_html_start
					)
				);
				$this->offset = $start_offset + $token_length;
				return true;

			case 'block-closer':
				/*
				 * if we're missing an opener we're in trouble
				 * This is an error
				 */
				if ( 0 === $stack_depth ) {
					/*
					 * we have options
					 * - assume an implicit opener
					 * - assume _this_ is the opener
					 * - give up and close out the document
					 */
					$this->add_freeform();
					return false;
				}

				// if we're not nesting then this is easy - close the block.
				if ( 1 === $stack_depth ) {
					$this->add_block_from_stack( $start_offset );
					$this->offset = $start_offset + $token_length;
					return true;
				}

				/*
				 * otherwise we're nested and we have to close out the current
				 * block and add it as a new innerBlock to the parent
				 */
				$stack_top                        = array_pop( $this->stack );
				$html                             = substr( $this->document, $stack_top->prev_offset, $start_offset - $stack_top->prev_offset );
				$stack_top->block->innerHTML     .= $html;
				$stack_top->block->innerContent[] = $html;
				$stack_top->prev_offset           = $start_offset + $token_length;

				$this->add_inner_block(
					$stack_top->block,
					$stack_top->token_start,
					$stack_top->token_length,
					$start_offset + $token_length
				);
				$this->offset = $start_offset + $token_length;
				return true;

			default:
				// This is an error.
				$this->add_freeform();
				return false;
		}
	}

	/**
	 * Scans the document from where we last left off
	 * and finds the next valid token to parse if it exists
	 *
	 * Returns the type of the find: kind of find, block information, attributes
	 *
	 * @internal
	 * @since 5.0.0
	 * @since 4.6.1 fixed a bug in attribute parsing which caused catastrophic backtracking on invalid block comments
	 * @return array
	 */
	public function next_token() {
		$matches = null;

		/*
		 * aye the magic
		 * we're using a single RegExp to tokenize the block comment delimiters
		 * we're also using a trick here because the only difference between a
		 * block opener and a block closer is the leading / before wp: (and
		 * a closer has no attributes). we can trap them both and process the
		 * match back in PHP to see which one it was.
		 */
		$has_match = preg_match(
			'/<!--\s+(?P<closer>\/)?wp:(?P<namespace>[a-z][a-z0-9_-]*\/)?(?P<name>[a-z][a-z0-9_-]*)\s+(?P<attrs>{(?:(?:[^}]+|}+(?=})|(?!}\s+\/?-->).)*+)?}\s+)?(?P<void>\/)?-->/s',
			$this->document,
			$matches,
			PREG_OFFSET_CAPTURE,
			$this->offset
		);

		// if we get here we probably have catastrophic backtracking or out-of-memory in the PCRE.
		if ( false === $has_match ) {
			return array( 'no-more-tokens', null, null, null, null );
		}

		// we have no more tokens.
		if ( 0 === $has_match ) {
			return array( 'no-more-tokens', null, null, null, null );
		}

		list( $match, $started_at ) = $matches[0];

		$length    = strlen( $match );
		$is_closer = isset( $matches['closer'] ) && -1 !== $matches['closer'][1];
		$is_void   = isset( $matches['void'] ) && -1 !== $matches['void'][1];
		$namespace = $matches['namespace'];
		$namespace = ( isset( $namespace ) && -1 !== $namespace[1] ) ? $namespace[0] : 'core/';
		$name      = $namespace . $matches['name'][0];
		$has_attrs = isset( $matches['attrs'] ) && -1 !== $matches['attrs'][1];

		/*
		 * Fun fact! It's not trivial in PHP to create "an empty associative array" since all arrays
		 * are associative arrays. If we use array() we get a JSON []
		 */
		$attrs = $has_attrs
			? json_decode( $matches['attrs'][0], /* as-associative */ true )
			: array();

		/*
		 * This state isn't allowed
		 * This is an error
		 */
		if ( $is_closer && ( $is_void || $has_attrs ) ) {
			// we can ignore them since they don't hurt anything.
		}

		if ( $is_void ) {
			return array( 'void-block', $name, $attrs, $started_at, $length );
		}

		if ( $is_closer ) {
			return array( 'block-closer', $name, null, $started_at, $length );
		}

		return array( 'block-opener', $name, $attrs, $started_at, $length );
	}

	/**
	 * Returns a new block object for freeform HTML
	 *
	 * @internal
	 * @since 3.9.0
	 *
	 * @param string $inner_html HTML content of block.
	 * @return WP_Block_Parser_Block freeform block object.
	 */
	public function freeform( $inner_html ) {
		return new WP_Block_Parser_Block( null, array(), array(), $inner_html, array( $inner_html ) );
	}

	/**
	 * Pushes a length of text from the input document
	 * to the output list as a freeform block.
	 *
	 * @internal
	 * @since 5.0.0
	 * @param null $length how many bytes of document text to output.
	 */
	public function add_freeform( $length = null ) {
		$length = $length ? $length : strlen( $this->document ) - $this->offset;

		if ( 0 === $length ) {
			return;
		}

		$this->output[] = (array) $this->freeform( substr( $this->document, $this->offset, $length ) );
	}

	/**
	 * Given a block structure from memory pushes
	 * a new block to the output list.
	 *
	 * @internal
	 * @since 5.0.0
	 * @param WP_Block_Parser_Block $block        The block to add to the output.
	 * @param int                   $token_start  Byte offset into the document where the first token for the block starts.
	 * @param int                   $token_length Byte length of entire block from start of opening token to end of closing token.
	 * @param int|null              $last_offset  Last byte offset into document if continuing form earlier output.
	 */
	public function add_inner_block( WP_Block_Parser_Block $block, $token_start, $token_length, $last_offset = null ) {
		$parent                       = $this->stack[ count( $this->stack ) - 1 ];
		$parent->block->innerBlocks[] = (array) $block;
		$html                         = substr( $this->document, $parent->prev_offset, $token_start - $parent->prev_offset );

		if ( ! empty( $html ) ) {
			$parent->block->innerHTML     .= $html;
			$parent->block->innerContent[] = $html;
		}

		$parent->block->innerContent[] = null;
		$parent->prev_offset           = $last_offset ? $last_offset : $token_start + $token_length;
	}

	/**
	 * Pushes the top block from the parsing stack to the output list.
	 *
	 * @internal
	 * @since 5.0.0
	 * @param int|null $end_offset byte offset into document for where we should stop sending text output as HTML.
	 */
	public function add_block_from_stack( $end_offset = null ) {
		$stack_top   = array_pop( $this->stack );
		$prev_offset = $stack_top->prev_offset;

		$html = isset( $end_offset )
			? substr( $this->document, $prev_offset, $end_offset - $prev_offset )
			: substr( $this->document, $prev_offset );

		if ( ! empty( $html ) ) {
			$stack_top->block->innerHTML     .= $html;
			$stack_top->block->innerContent[] = $html;
		}

		if ( isset( $stack_top->leading_html_start ) ) {
			$this->output[] = (array) $this->freeform(
				substr(
					$this->document,
					$stack_top->leading_html_start,
					$stack_top->token_start - $stack_top->leading_html_start
				)
			);
		}

		$this->output[] = (array) $stack_top->block;
	}
}

/**
 * WP_Block_Parser_Block class.
 *
 * Required for backward compatibility in WordPress Core.
 */
require_once __DIR__ . '/class-wp-block-parser-block.php';

/**
 * WP_Block_Parser_Frame class.
 *
 * Required for backward compatibility in WordPress Core.
 */
require_once __DIR__ . '/class-wp-block-parser-frame.php';

I marked line 280 in bold

Hi,

PHP memory exhaustion can occur due to a large process of code happening at once. If you can access the editor page, try duplicating the page, and then on the new page, delete or disable sections one by one to identify which section causes the memory exhaustion.

Nope, same thing. After deleting all blocks the error message is still:

Fatal error: Allowed memory size of 268435456 bytes exhausted (tried to allocate 20480 bytes) in?/data/sites/web/vanacker-technicsbe/www/wp-includes/class-wp-block-parser.php?on line?252

Hi,

can you send us the gutenverse system status? its in gutenverse dasboard>system status.

I will try to recreate the error to debug it. and also have you considered the second line of error :
Fatal error: Allowed memory size of 268435456 bytes exhausted (tried to allocate 81920 bytes) in?/data/sites/web/vanacker-technicsbe/www/wp-includes/l10n/class-wp-translation-file-php.php?on line?32. It says something about the translation file.

json_decode( $matches[‘attrs’][0], /* as-associative */ true ) This line of code decodes JSON data, and if the memory limit error happened here that could mean that this code rendered continuously to the point that it crashes, or the JSON data is too complex and large that it requires a lot of memory to process.

Here it is:

### THEME INFO ###

Theme Name : Intrace
Theme Version : 1.1.5


### WordPress Environment ###

Home URL : https://vanacker-technics.be/
Site URL : https://vanacker-technics.be
Login URL : https://vanacker-technics.be/appelboom/
WP Version : 6.5.5
WP Multisite : -
WP Debug Mode : Enabled
PHP Memory Limit : 256M
WP Memory Limit : 256M
WP Language : nl_NL
WP Upload Directory : ?
Number of Category : 1
Number of Tag : 0


### Server Environment ###

Server Info : Apache
PHP Version : 8.1.29
PHP Post Max Size : 256M
PHP Time Limit : 300
PHP Max Input Vars : 20000
SUHOSIN Installed : -
WP Remote Get : ?
PHP Image library installed  : ?
PHP GD library installed  : ?
PHP GD WebP supported : ?
PHP fileinfo library installed  : ?
CURL Installed  : ?


### Active Plugins ###

All in One SEO : by All in One SEO Team - 4.6.6
Antispam Bee : by pluginkollektiv - 2.11.6
Change wp-admin login : by wpexpertsio - 1.1.9
Elementor : by Elementor.com - 3.23.1
Google Analytics Dashboard for WP (GADWP) : by ExactMetrics - 7.28.0
Google Analytics for WordPress by MonsterInsights : by MonsterInsights - 8.28.0
Gutenverse : by Jegstudio - 1.9.3
Health Check & Troubleshooting : by The www.ads-software.com community - 1.7.0
Limit Login Attempts Reloaded : by Limit Login Attempts Reloaded - 2.26.11
OptinMonster : by OptinMonster Popup Builder Team - 2.16.4
Orbit Fox Companion : by Themeisle - 2.10.36
Really Simple CAPTCHA : by Takayuki Miyoshi - 2.3
Really Simple SSL : by Really Simple Plugins - 8.1.5
UpdraftPlus - Backup/Restore : by UpdraftPlus.Com, DavidAnderson - 1.24.4
UserFeedback Lite : by UserFeedback Team - 1.0.16
Wordfence Security : by Wordfence - 7.11.6
WPCode Lite : by WPCode - 2.1.14
WPForms Lite : by WPForms - 1.8.9.6
Yoast Duplicate Post : by Enrico Battocchi & Team Yoast - 4.5
Yoast SEO : by Team Yoast - 23.0

The PHP time limit is 300 by default on the host, we already tried setting it to 1000 for testing purposes to see if it fixes it, but it didn’t so our hosting company put it back to the standard 300 of our package. They said that 300 should be more than enough, and if the error still occurs with 1000 that there’s another problem. Nothing should take that long.

Yes, the PHP memory limit should be enough.

I have tried to duplicate the error you are facing but to no avail. I could not pinpoint the exact reason why the error occurred, but I have a rough idea of what might happened. If you have already tried to delete all the blocks in the services page and still have the error, the error could be in the template of the page used. you can try to change the template that the service page uses, go to the editor, and select the page option in the panel look for the template and change it.