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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
	117337	view	11:51, 20 May 2021	Eweitz	Ontology Term : 'glycine metabolic pathway' added !
	117336	view	11:50, 20 May 2021	Eweitz	Modified title
	69824	view	14:43, 11 July 2013	Egonw	Marked a few DataNodes with CAS registry numbers as metabolites.
	69621	view	20:34, 8 July 2013	MaintBot	Updated to 2013 gpml schema
	67637	view	11:36, 26 June 2013	Ddigles	Ontology Term : 'serine metabolic pathway' added !
	41855	view	04:51, 2 March 2011	MaintBot	Removed redundant pathway information and comments
	21137	view	11:30, 14 November 2008	MaintBot	[[Pathway:Saccharomyces cerevisiae:Serine Glycine Biosynthesis]] moved to [[Pathway:WP218]]: Moved to stable identifier
	12845	view	08:05, 17 May 2008	MaintBot	automated metabolite conversion
	8924	view	14:12, 7 January 2008	MaintBot	Added to category $category
	8922	view	14:12, 7 January 2008	J.Heckman	Uploaded 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, 8922)
#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}