API Geting empty 404 and before (without modify the code) i had 200 - It still creating the objects.

I'm sending this instruction to create many titles, before (3 or 4 week ago) was working like a charm. But now the instruction is executed but the response is returning 404 html status BUT the objects ARE created in the mural. Something change ? do i have to add something ? (i review the documentation for changes and i found nothing).
https://developers.mural.co/public/reference/createtitleError

POST /api/public/v1/murals/zzzz.yyyyyy/widgets/title HTTP/1.1Content-Type: application/jsonAuthorization: Bearer xxxxUser-Agent: PostmanRuntime/7.32.3Accept: */*Postman-Token: 981e26ad-aa67-4f86-b673-9d05c588f74eHost: app.mural.coAccept-Encoding: gzip, deflate, brConnection: keep-aliveContent-Length: 16409 
[{"height": 30, "width": 165.6, "title": "title_P1", "text": "Evaporator Eff 6-2 CBL Flow", "x": 300, "y": 280, "style": {"fontSize": 16}}, {"height": 30, "width": 165.6, "title": "title_T1", "text": "DT1", "x": 800.0, "y": 280, "style": {"fontSize": 16}}, {"height": 30, "width": 165.6, "title": "title_P2", "text": "Evaporator Effect 1", "x": 1300, "y": 280, "style": {"fontSize": 16}}, {"height": 30, "width": 165.6, "title": "title_T35", "text": "DT36", "x": 11800.0, "y": 780, "style": {"fontSize": 16}}, {"height": 30, "width": 165.6, "title": "title_T36", "text": "DT37", "x": 11800.0, "y": 1280, "style": {"fontSize": 16}}, ………………..{"height": 30, "width": 165.6, "title": "title_P68", "text": "Max CLO2", "x": 22300, "y": 4280, "style": {"fontSize": 16}}, {"height": 30, "width": 165.6, "title": "title_P69", "text": "Max G1Flow to Dryer", "x": 22300, "y": 4780, "style": {"fontSize": 16}}]
HTTP/1.1 404 Not FoundDate: Thu, 31 Aug 2023 16:56:36 GMTContent-Type: application/json; charset=utf-8Content-Length: 2Connection: keep-aliveX-Powered-By: ExpressVary: Origin, Accept-Encodingx-jwt-expires-in: 726Cache-Control: private, no-cache, no-store, must-revalidatex-mural-ly-version: 1.0.0X-Request-ID: 366b5485-0cdd-4bee-a380-fb76ee0a21adX-RateLimit-Limit: 25X-RateLimit-Remaining: 24X-RateLimit-Reset: 1693500997X-RateLimit-App-Limit: 10000X-RateLimit-App-Remaining: 9999X-RateLimit-App-Reset: 1693501056ETag: W/"2-vyGp6PvFo4RvsFtPoIWeCReyIC8"Strict-Transport-Security: max-age=31536000; includeSubDomains; preloadX-Content-Type-Options: nosniffX-Recruiting: If you are reading this, you should probably stop what you are doing and head to mural.co/careersX-Robots-Tag: noneX-XSS-Protection: 1; mode=block {}

zzzz yyyy xxx and ….. intentionaly replaced to write this question

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