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Error rendering pathway page

This revision of the pathway probably contains invalid GPML code. If this happens to the most recent revision, try reverting the pathway using the pathway history displayed below or contact the site administrators (see WikiPathways:About) to resolve this problem.

Pathway history

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Compare	Revision	Action	Time	User	Comment
	124937	view	11:01, 2 January 2023	Egonw	Converted a few more metabolites from Label to DataNode
	117894	view	10:24, 23 May 2021	Eweitz	Modified title
	107200	view	14:29, 17 September 2019	MaintBot	ChEBI identifier normalization
	106861	view	13:34, 17 September 2019	MaintBot	HMDB identifier normalization
	93013	view	15:02, 24 July 2017	DeSl	Changed (vague) CAS to ChEBI ID (which looked to be more relevant).
	89923	view	13:34, 6 October 2016	Mkutmon	Modified description
	69996	view	22:32, 11 July 2013	MaintBot	updated to 2013 schema
	67334	view	10:38, 26 June 2013	Christine Chichester	Ontology Term : 'heme biosynthetic pathway' added !
	41372	view	00:28, 2 March 2011	MaintBot	Removed redundant pathway information and comments
	35285	view	22:48, 11 February 2010	Mills42	Modified description
	34418	view	23:14, 9 December 2009	MaintBot	Automatic update of empty xrefs
	32667	view	16:05, 27 August 2009	Khanspers	Added CAS metabolites
	31989	view	13:13, 14 August 2009	MaintBot	Fixed group labels
	30811	view	23:55, 29 July 2009	MaintBot	Converted from Homo sapiens
	20713	view	11:29, 14 November 2008	MaintBot	[[Pathway:Mus musculus:Heme Biosynthesis]] moved to [[Pathway:WP18]]: Moved to stable identifier
	8134	view	13:46, 7 January 2008	MaintBot	[[Pathway:Mouse:Heme Biosynthesis]] moved to [[Pathway:Mus musculus:Heme Biosynthesis]]: Renaming species
	7688	view	16:09, 18 December 2007	MaintBot	fixed category names
	7373	view	12:42, 4 November 2007	MaintBot	Added categories to GPML
	19493	view	22:19, 22 May 2007	M.Braymer	gpml file for [[Mouse:Heme_Biosynthesis]]
	6456	view	22:19, 22 May 2007	Kdahlquist	gpml file for [[Mouse:Heme_Biosynthesis]]

Error details

exception 'MWException' with message 'Invalid pvjson, so cannot savePvjsonCache.' in /var/www/wikipathways/wpi/extensions/Pathways/Pathway.php:1277
Stack trace:
#0 /var/www/wikipathways/wpi/extensions/Pathways/Pathway.php(584): Pathway->savePvjsonCache()
#1 /var/www/wikipathways/wpi/extensions/Pathways/PathwayPage.php(295): Pathway->getPvjson()
#2 /var/www/wikipathways/wpi/extensions/Pathways/PathwayPage.php(169): PathwayPage->Diagram()
#3 /var/www/wikipathways/wpi/extensions/Pathways/PathwayPage.php(24): PathwayPage->render()
#4 [internal function]: renderPathwayPage(Object(Parser), '<?xml version="...', Object(StripState))
#5 /var/www/wikipathways/includes/Hooks.php(125): call_user_func_array('renderPathwayPa...', Array)
#6 /var/www/wikipathways/includes/parser/Parser.php(318): wfRunHooks('ParserBeforeStr...', Array)
#7 /var/www/wikipathways/includes/Article.php(3406): Parser->parse('<?xml version="...', Object(Title), Object(ParserOptions), true, true, 31989)
#8 /var/www/wikipathways/includes/Article.php(875): Article->outputWikiText('<?xml version="...', false)
#9 /var/www/wikipathways/includes/Wiki.php(437): Article->view()
#10 /var/www/wikipathways/includes/Wiki.php(59): MediaWiki->performAction(Object(OutputPage), Object(Article), Object(Title), Object(User), Object(WebRequest))
#11 /var/www/wikipathways/index.php(93): MediaWiki->initialize(Object(Title), Object(Article), Object(OutputPage), Object(User), Object(WebRequest))
#12 {main}