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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
	117338	view	11:51, 20 May 2021	Eweitz	Modified title
	97092	view	08:08, 27 April 2018	Egonw	Replaced secondary ChEBI identifiers with primary identifiers.
	97071	view	15:45, 26 April 2018	Youssefwalid	connected lines and added labels
	69877	view	18:11, 11 July 2013	Egonw	Marked a few DataNodes with CAS registry numbers as metabolites.
	69573	view	20:28, 8 July 2013	MaintBot	Updated to 2013 gpml schema
	67638	view	11:37, 26 June 2013	Ddigles	Ontology Term : 'serine metabolic pathway' added !
	41791	view	04:47, 2 March 2011	MaintBot	Removed redundant pathway information and comments
	21646	view	11:32, 14 November 2008	MaintBot	[[Pathway:Saccharomyces cerevisiae:Serine Biosynthesis]] moved to [[Pathway:WP459]]: Moved to stable identifier
	12843	view	08:05, 17 May 2008	MaintBot	automated metabolite conversion
	8921	view	14:12, 7 January 2008	MaintBot	Added to category $category
	8919	view	14:12, 7 January 2008	M.Braymer	Uploaded new pathway

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, 8919)
#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}