A now globally-banned user vandalised en.wikivoyage's Coordinates module (edit deleted) on 28 April 2023 with the phrase "Anorexia is fun". This continues to show up on some pages in the mobile REST API as Lua error in package.lua at line 80: module 'Anorexia is fun' not found. For example:
$ curl https://en.wikivoyage.org/api/rest_v1/page/mobile-html/East_Frisia/4502178 | grep 'Anorexia is fun' 0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0<!DOCTYPE html><html prefix="dc: http://purl.org/dc/terms/ mw: http://mediawiki.org/rdf/" about="https://en.wikivoyage.org/wiki/Special:Redirect/revision/4502178" class="no-editing"><head prefix="mwr: https://en.wikivoyage.org/wiki/Special:Redirect/"><meta property="mw:TimeUuid" content="f2c83640-e55d-11ed-b1ea-a51106ac9ee2"><meta charset="utf-8"><meta property="mw:pageId" content="10438"><meta property="mw:pageNamespace" content="0"><meta property="mw:revisionSHA1" content="01c4129de48233f105f84c3a1cb6e3410621da17"><meta property="dc:modified" content="2022-08-16T12:29:20.000Z"><meta property="mw:htmlVersion" content="2.7.0"><meta property="mw:html:version" content="2.7.0"><link rel="dc:isVersionOf" href="//en.wikivoyage.org/wiki/East_Frisia"><base href="//en.wikivoyage.org/wiki/"><title>East Frisia</title><meta property="mw:jsConfigVars" content="{"wgKartographerLiveData":{"mask":[],"around":[],"buy":[],"city":[],"do":[],"event":[],"drink":[],"eat":[],"go":[],"listing":[],"other":[],"see":[],"sleep":[],"vicinity":[],"view":[],"black":[],"blue":[],"brown":[],"chocolate":[],"forestgreen":[],"gold":[],"gray":[],"grey":[],"lime":[],"magenta":[],"maroon":[],"mediumaquamarine":[],"navy":[],"red":[],"royalblue":[],"orange":[],"silver":[],"steelblue":[],"teal":[],"fuchsia":[],"route1":[],"route2":[],"route3":[],"route4":[],"route5":[]},"ScribuntoErrors":["<p>Lua error in package.lua at line 80: module 'Anorexia is fun' not found.</p><p>Backtrace:</p><ol class=\"scribunto-trace\"><li><strong>[C]</strong>: in function \"error\"</li><li><strong>package.lua:80</strong>: in function \"load\"</li><li><strong>package.lua:99</strong>: in function \"require\"</li><li><strong><a href=\"//en.wikivoyage.org/w/index.php?title=Module:Coordinates&amp;action=edit#mw-ce-l21\">Module:Coordinates:21</a></strong>: in function \"init\"</li><li><strong>package.lua:103</strong>: in function \"require\"</li><li><strong><a href=\"//en.wikivoyage.org/w/index.php?title=Module:Marker&amp;action=edit#mw-ce-l8\">Module:Marker:8</a></strong>: in function \"chunk\"</li><li><strong>mw.lua:496</strong>:&#160;?</li><li><strong>[C]</strong>:&#160;?</li></ol>"]}"><meta property="mw:generalModules" content="ext.kartographer.frame|ext.scribunto.errors"><meta property="mw:moduleStyles" content="ext.kartographer.style"><meta http-equiv="content-language" content="en"><meta http-equiv="vary" content="Accept"><link rel="stylesheet" href="//meta.wikimedia.org/api/rest_v1/data/css/mobile/base"><link rel="stylesheet" href="//en.wikivoyage.org/api/rest_v1/data/css/mobile/site"><link rel="stylesheet" href="//meta.wikimedia.org/api/rest_v1/data/css/mobile/pcs"><meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1, shrink-to-fit=no"><script src="//meta.wikimedia.org/api/rest_v1/data/javascript/mobile/pcs"></script><link rel="icon" href="data:,"><meta property="pcs:locale" content="en"><meta property="mw:leadImage" content="https://upload.wikimedia.org/wikipedia/commons/e/e7/Neuharlingersiel_-_Hafen_-_16.07.07.JPG" data-file-width="1200" data-file-height="900"></head><body lang="en" class="mw-content-ltr sitedir-ltr ltr mw-body-content parsoid-body mediawiki mw-parser-output content skin-minerva" dir="ltr"><div id="pcs" class="mw-parser-output"><script>pcs.c1.Page.onBodyStart();</script><header><div class="pcs-edit-section-header v2"><div class="pcs-header-inner-left"><h1 data-id="0" class="pcs-edit-section-title"><span class="mw-page-title-main">East Frisia</span></h1><p data-description-source="central" data-wikdata-entity-id="Q165269" id="pcs-edit-section-title-description">historic and cultural region in Lower Saxony, Germany</p><hr id="pcs-edit-section-divider"></div><div class="pcs-header-inner-right"></div></div></header><section data-mw-section-id="0"><span class="pcs-edit-section-link-container"><a href="/w/index.php?title=East_Frisia&action=edit&section=0" data-id="0" data-action="edit_section" aria-labelledby="pcs-edit-section-aria-normal" class="pcs-edit-section-link"></a></span><p><style data-mw-deduplicate="TemplateStyles:r4253834" typeof="mw:Extension/templatestyles mw:Transclusion">.mw-parser-output .oo-ui-icon-unesco{background-image:url("https://upload.wikimedia.org/wikipedia/commons/b/b1/WorldHeritageBlanc.svg")}.mw-parser-output .oo-ui-icon-star{background-image:url("https://upload.wikimedia.org/wikipedia/commons/e/e7/Cscr-featured.svg")}.mw-parser-output .oo-ui-icon-ftt{background-image:url("https://upload.wikimedia.org/wikipedia/commons/thumb/b/b0/Writing_Circle.svg/25px-Writing_Circle.svg.png")}.mw-parser-output .oo-ui-icon-dotm{background-image:url("https://upload.wikimedia.org/wikipedia/commons/thumb/5/50/Yes_Check_Circle.svg/25px-Yes_Check_Circle.svg.png")}.mw-parser-output .oo-ui-icon-otbp{background-image:url("https://upload.wikimedia.org/wikipedia/commons/thumb/6/6e/Right_turn_icon_blue.svg/25px-Right_turn_icon_blue.svg.png")}</style><span class="countryData" data-country-calling-code="+49" data-local-dialing-code="" data-currency="EUR, €, c" style="display:none;"></span><span> </span> <ul><li><strong class="error" about="#mwt9" typeof="mw:Transclusion" data-mw="{"parts":[{"template":{"target":{"wt":"marker","href":"./Template:Marker"},"params":{"type":{"wt":"city"},"name":{"wt":"[[Aurich]]"},"lat":{"wt":"53.471389"},"long":{"wt":"7.483611"},"wikidata":{"wt":"Q14839"}},"i":0}}]}"><span class="scribunto-error" id="mw-scribunto-error-0">Lua error in package.lua at line 80: module 'Anorexia is fun' not found.</span></strong></li> <li><strong class="error" about="#mwt10" typeof="mw:Transclusion" data-mw="{"parts":[{"template":{"target":{"wt":"marker","href":"./Template:Marker"},"params":{"type":{"wt":"city"},"name":{"wt":"[[Emden]]"},"lat":{"wt":"53.366944"},"long":{"wt":"7.206111"},"wikidata":{"wt":"Q4174"}},"i":0}}]}"><span class="scribunto-error" id="mw-scribunto-error-0">Lua error in package.lua at line 80: module 'Anorexia is fun' not found.</span></strong></li> <li><strong class="error" about="#mwt11" typeof="mw:Transclusion" data-mw="{"parts":[{"template":{"target":{"wt":"marker","href":"./Template:Marker"},"params":{"type":{"wt":"city"},"name":{"wt":"[[Esens]]"},"lat":{"wt":"53.646944"},"long":{"wt":"7.612778"},"wikidata":{"wt":"Q509338"}},"i":0}}]}"><span class="scribunto-error" id="mw-scribunto-error-0">Lua error in package.lua at line 80: module 'Anorexia is fun' not found.</span></strong> — a regional transportation hub with buses departing for the ferryports of several <a href="./East_Frisian_islands" title="East Frisian islands" class="mw-redirect">East Frisian islands</a></li> <li><strong class="error" about="#mwt12" typeof="mw:Transclusion" data-mw="{"parts":[{"template":{"target":{"wt":"marker","href":"./Template:Marker"},"params":{"type":{"wt":"city"},"name":{"wt":"[[Leer]]"},"lat":{"wt":"53.230833"},"long":{"wt":"7.452778"},"wikidata":{"wt":"Q15984"}},"i":0}}]}"><span class="scribunto-error" id="mw-scribunto-error-0">Lua error in package.lua at line 80: module 'Anorexia is fun' not found.</span></strong></li> <li><strong class="error" about="#mwt13" typeof="mw:Transclusion" data-mw="{"parts":[{"template":{"target":{"wt":"marker","href":"./Template:Marker"},"params":{"type":{"wt":"city"},"name":{"wt":"[[Norden Norddeich]]"},"lat":{"wt":"53.596667"},"long":{"wt":"7.205556"},"wikidata":{"wt":"Q492366"}},"i":0}}]}"><span class="scribunto-error" id="mw-scribunto-error-0">Lua error in package.lua at line 80: module 'Anorexia is fun' not found.</span></strong> — ferry to Norderney and Juist</li> <li><strong class="error" about="#mwt14" typeof="mw:Transclusion" data-mw="{"parts":[{"template":{"target":{"wt":"marker","href":"./Template:Marker"},"params":{"type":{"wt":"city"},"name":{"wt":"[[Varel]]"},"lat":{"wt":"53.396944"},"long":{"wt":"8.136111"},"wikidata":{"wt":"Q496056"}},"i":0}}]}"><span class="scribunto-error" id="mw-scribunto-error-0">Lua error in package.lua at line 80: module 'Anorexia is fun' not found.</span></strong> —</li> <li><strong class="error" about="#mwt15" typeof="mw:Transclusion" data-mw="{"parts":[{"template":{"target":{"wt":"marker","href":"./Template:Marker"},"params":{"type":{"wt":"city"},"name":{"wt":"[[Wilhelmshaven]]"},"lat":{"wt":"53.516667"},"long":{"wt":"8.133333"},"wikidata":{"wt":"Q3857"}},"i":0}}]}"><span class="scribunto-error" id="mw-scribunto-error-0">Lua error in package.lua at line 80: module 'Anorexia is fun' not found.</span></strong> — named for the Prussian ruler, this city used to be Germany's most important military harbour</li> <li><strong class="error" about="#mwt16" typeof="mw:Transclusion" data-mw="{"parts":[{"template":{"target":{"wt":"marker","href":"./Template:Marker"},"params":{"type":{"wt":"city"},"name":{"wt":"[[Wittmund]]"},"lat":{"wt":"53.574722"},"long":{"wt":"7.780833"},"wikidata":{"wt":"Q509353"}},"i":0}}]}"><span class="scribunto-error" id="mw-scribunto-error-0">Lua error in package.lua at line 80: module 'Anorexia is fun' not found.</span></strong> —</li></ul> ]"},"wikidata":{"wt":"Q27769"}},"i":0}}]}"><span class="scribunto-error" id="mw-scribunto-error-0">Lua error in package.lua at line 80: module 'Anorexia is fun' not found.</span></strong></li> <li><strong class="error" about="#mwt18" typeof="mw:Transclusion" data-mw="{"parts":[{"template":{"target":{"wt":"marker","href":"./Template:Marker"},"params":{"type":{"wt":"vicinity"},"name":{"wt":"[[Lower Saxon Wadden Sea National Park]]"},"wikidata":{"wt":"Q661217"}},"i":0}}]}"><span class="scribunto-error" id="mw-scribunto-error-0">Lua error in package.lua at line 80: module 'Anorexia is fun' not found.</span></strong> — the large national park area stretches along the North Sea coast of East Frisia and <a href="./Elbe-Weser_Triangle" title="Elbe-Weser Triangle">Elbe-Weser Triangle</a> between Ems and Elbe river estuaries.</li></ul>
Null editing the page, the template and the module does not clear the caching.