PostMessage ignored: not ready

PostMessage ignored: not ready.
logWithCool @ cool.html?file_path=%2Fhome%2Fubuntu22%2FDesktop%2Fcollabora-online%2Ftest%2Fdata%2Fhello-world.odt&NotWOPIButIframe=true:322
_postMessageListener @ Map.WOPI.js:409
handler @ DomEvent.js:51
postMessage (async)
post @ framed.doc.html?file_path=/home/ubuntu22/Desktop/collabora-online/test/data/hello-world.odt:66
reset_access_token @ framed.doc.html?file_path=/home/ubuntu22/Desktop/collabora-online/test/data/hello-world.odt:237
onclick @ framed.doc.html?file_path=/home/ubuntu22/Desktop/collabora-online/test/data/hello-world.odt:499

Getting this error on collabora postmessage end point

Hi,
see the SDK page:

https://sdk.collaboraonline.com/docs/postmessage_api.html

It is to be noted that as mentioned in WOPI specs, Collabora Online frame will ignore all post messages coming from the host frame if Host_PostmessageReady has not been received.

But the error occured in the postmessage URL given by the collabora server itself.