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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
	117222	view	09:30, 19 May 2021	Eweitz	Modified title
	105885	view	07:47, 16 August 2019	Mkutmon	HMDB identifier unification
	105749	view	14:56, 15 August 2019	Mkutmon	Reverted to version '14:50, 12 August 2016' by Mkutmon
	105748	view	14:53, 15 August 2019	Mkutmon	HMDB identifier unification
	88637	view	14:50, 12 August 2016	Jmelius	Ontology Term : 'heme biosynthetic pathway' added !
	86923	view	11:43, 15 July 2016	Mkutmon	update description
	71942	view	21:51, 23 October 2013	Egonw	Converted five labels into Metabolite DataNodes.
	71941	view	21:49, 23 October 2013	Egonw	Removed a copy.
	71940	view	21:49, 23 October 2013	Egonw	Split up a label with two metabolites into two DataNodes.
	71855	view	20:15, 18 October 2013	MaintBot	Updated data sources
	70198	view	04:31, 13 July 2013	MaintBot	updated to 2013 schema
	40463	view	18:46, 1 March 2011	MaintBot	Removed redundant pathway information and comments
	35294	view	22:55, 11 February 2010	Mills42	Modified description
	33730	view	23:42, 8 December 2009	MaintBot	Automatic update of empty xrefs
	31828	view	12:26, 14 August 2009	MaintBot	Fixed group labels
	30790	view	23:38, 29 July 2009	MaintBot	New pathway

Error details

exception 'MWException' with message 'Invalid pvjson, so cannot savePvjsonCache.' in /var/www/wikipathways/wpi/extensions/Pathways/Pathway.php:1278
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, 30790)
#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}