Note the difference between querying the current title
a) https://en.wikivoyage.org/api/rest_v1/page/mobile-html/Thakhek
and then its using it's former title:
b) https://en.wikivoyage.org/api/rest_v1/page/mobile-html/Tha_Khaek
Using the former title "Tha_Khaek" returns a page that hasn't existed since before December 2022. Is T335770 rearing its head again in a weird way? @akosiaris I added you because you were the superman who resolved that issue.
I have tried null editing the current page to no avail. For what it's worth, https://en.wikivoyage.org/wiki/Tha_Khaek redirects just fine outside of the REST API. I have tried this from New Zealand and San Francisco.
In case it helps, here's the cURL of the old title from New Zealand (with the page content body truncated after the title header tag to not blow up the description here):
curl -v https://en.wikivoyage.org/api/rest_v1/page/mobile-html/Tha_Khaek
* Trying 198.35.26.96:443...
* Connected to en.wikivoyage.org (198.35.26.96) port 443 (#0)
* ALPN: offers h2,http/1.1
* (304) (OUT), TLS handshake, Client hello (1):
* CAfile: /etc/ssl/cert.pem
* CApath: none
* (304) (IN), TLS handshake, Server hello (2):
* (304) (IN), TLS handshake, Unknown (8):
* (304) (IN), TLS handshake, Certificate (11):
* (304) (IN), TLS handshake, CERT verify (15):
* (304) (IN), TLS handshake, Finished (20):
* (304) (OUT), TLS handshake, Finished (20):
* SSL connection using TLSv1.3 / AEAD-CHACHA20-POLY1305-SHA256
* ALPN: server accepted h2
* Server certificate:
* subject: CN=*.wikipedia.org
* start date: Aug 22 06:51:12 2023 GMT
* expire date: Nov 20 06:51:11 2023 GMT
* subjectAltName: host "en.wikivoyage.org" matched cert's "*.wikivoyage.org"
* issuer: C=US; O=Let's Encrypt; CN=R3
* SSL certificate verify ok.
* using HTTP/2
* h2 [:method: GET]
* h2 [:scheme: https]
* h2 [:authority: en.wikivoyage.org]
* h2 [:path: /api/rest_v1/page/mobile-html/Tha_Khaek]
* h2 [user-agent: curl/8.1.2]
* h2 [accept: */*]
* Using Stream ID: 1 (easy handle 0x129812400)
> GET /api/rest_v1/page/mobile-html/Tha_Khaek HTTP/2
> Host: en.wikivoyage.org
> User-Agent: curl/8.1.2
> Accept: */*
>
< HTTP/2 200
< content-language: en
< content-type: text/html; charset=utf-8; profile="https://www.mediawiki.org/wiki/Specs/Mobile-HTML/1.2.2"
< vary: Accept-Encoding
< cache-control: s-maxage=1209600, max-age=0
< access-control-allow-origin: *
< access-control-allow-methods: GET,HEAD
< access-control-allow-headers: accept, content-type, content-length, cache-control, accept-language, api-user-agent, if-match, if-modified-since, if-none-match, dnt, accept-encoding
< access-control-expose-headers: etag
< x-content-type-options: nosniff
< x-frame-options: SAMEORIGIN
< referrer-policy: origin-when-cross-origin
< x-xss-protection: 1; mode=block
< content-security-policy: default-src 'none'; connect-src app://*.wikipedia.org https://*.wikipedia.org; media-src app://upload.wikimedia.org https://upload.wikimedia.org 'self'; img-src app://*.wikimedia.org https://*.wikimedia.org app://wikimedia.org https://wikimedia.org 'self' data:; object-src 'none'; script-src app://meta.wikimedia.org https://meta.wikimedia.org 'unsafe-inline'; style-src app://meta.wikimedia.org https://meta.wikimedia.org app://*.wikipedia.org https://*.wikipedia.org 'self' 'unsafe-inline'; frame-ancestors 'self'
< x-content-security-policy: default-src 'none'; connect-src app://*.wikipedia.org https://*.wikipedia.org; media-src app://upload.wikimedia.org https://upload.wikimedia.org 'self'; img-src app://*.wikimedia.org https://*.wikimedia.org app://wikimedia.org https://wikimedia.org 'self' data:; object-src 'none'; script-src app://meta.wikimedia.org https://meta.wikimedia.org 'unsafe-inline'; style-src app://meta.wikimedia.org https://meta.wikimedia.org app://*.wikipedia.org https://*.wikipedia.org 'self' 'unsafe-inline'; frame-ancestors 'self'
< x-webkit-csp: default-src 'none'; connect-src app://*.wikipedia.org https://*.wikipedia.org; media-src app://upload.wikimedia.org https://upload.wikimedia.org 'self'; img-src app://*.wikimedia.org https://*.wikimedia.org app://wikimedia.org https://wikimedia.org 'self' data:; object-src 'none'; script-src app://meta.wikimedia.org https://meta.wikimedia.org 'unsafe-inline'; style-src app://meta.wikimedia.org https://meta.wikimedia.org app://*.wikipedia.org https://*.wikipedia.org 'self' 'unsafe-inline'; frame-ancestors 'self'
< content-location: https://en.wikivoyage.org/api/rest_v1/page/mobile-html/Tha_Khaek
< server: restbase2016
< date: Sun, 17 Sep 2023 03:47:57 GMT
< etag: W/"4565862/d7ea7d10-86a8-11ed-887b-b84d258cb51b"
< age: 721
< x-cache: cp4038 miss, cp4038 hit/5
< x-cache-status: hit-front
< server-timing: cache;desc="hit-front", host;desc="cp4038"
< strict-transport-security: max-age=106384710; includeSubDomains; preload
< report-to: { "group": "wm_nel", "max_age": 604800, "endpoints": [{ "url": "https://intake-logging.wikimedia.org/v1/events?stream=w3c.reportingapi.network_error&schema_uri=/w3c/reportingapi/network_error/1.0.0" }] }
< nel: { "report_to": "wm_nel", "max_age": 604800, "failure_fraction": 0.05, "success_fraction": 0.0}
< set-cookie: WMF-Last-Access=17-Sep-2023;Path=/;HttpOnly;secure;Expires=Thu, 19 Oct 2023 00:00:00 GMT
< set-cookie: WMF-Last-Access-Global=17-Sep-2023;Path=/;Domain=.wikivoyage.org;HttpOnly;secure;Expires=Thu, 19 Oct 2023 00:00:00 GMT
< x-client-ip: 103.131.54.20
< set-cookie: GeoIP=NZ:AUK:Auckland:-36.85:174.77:v4; Path=/; secure; Domain=.wikivoyage.org
< set-cookie: NetworkProbeLimit=0.001;Path=/;Secure;Max-Age=3600
< accept-ranges: bytes
< content-length: 54873
<
<!DOCTYPE html><html prefix="dc: http://purl.org/dc/terms/ mw: http://mediawiki.org/rdf/" about="https://en.wikivoyage.org/wiki/Special:Redirect/revision/4565862" class="no-editing"><head prefix="mwr: https://en.wikivoyage.org/wiki/Special:Redirect/"><meta property="mw:TimeUuid" content="016f4ad0-69a3-11ed-b966-8b9e8477d5d5"><meta charset="utf-8"><meta property="mw:pageId" content="35699"><meta property="mw:pageNamespace" content="0"><meta property="mw:revisionSHA1" content="f92a1829ab870941fcecfc45cd274b71847add0e"><meta property="dc:modified" content="2022-11-21T13:47:12.000Z"><meta property="mw:htmlVersion" content="2.6.0"><meta property="mw:html:version" content="2.6.0"><link rel="dc:isVersionOf" href="//en.wikivoyage.org/wiki/Tha_Khaek"><base href="//en.wikivoyage.org/wiki/"><title>Tha Khaek</title><meta property="mw:jsConfigVars" content="{"wgKartographerLiveData":{"mask":[],"around":[],"buy":[],"city":[],"do":[],"drink":[],"eat":[],"go":[],"listing":[],"other":[],"see":[],"vicinity":[],"view":[]}}"><meta property="mw:generalModules" content="ext.kartographer.link|ext.kartographer.frame"><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/3/34/Buddha_cave%2C_Laos.jpg" data-file-width="1500" data-file-height="1000"></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">Tha Khaek</span></h1>
...
* Connection #0 to host en.wikivoyage.org left intact