Collabora error when opening files

[ppmt]

Hello,
I discovered Sync-in recently and until now have just been using the sync part of it but I saw that it now support Collabora to open file.
So I followed the instructions in the documentation but when I then try to open an Openoffice Calc document I get this message

{"message":"Cannot GET /browser/dist/cool.html?WOPISrc=http%3A%2F%2F192.168.0.246%2Fwopi%2Ffiles%2Fdd9d83485bbe5b822518843cf1bfe5632275d061d37a2a6cb11920b64880c3c1&access_token=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpZGVudGl0eSI6eyJpZCI6MSwibG9naW4iOiJwaGlsaXBwZSIsImVtYWlsIjoicGhpbGlwcGVAc3luYy1pbi5jb20iLCJmdWxsTmFtZSI6IlBoaWxpcHBlIEFkbWluaXN0cmF0b3IiLCJsYW5ndWFnZSI6bnVsbCwicm9sZSI6MCwiYXBwbGljYXRpb25zIjpbXSwic3BhY2VVcmwiOiJmaWxlcy9wZXJzb25hbC9PcmRlcnNfZnJvbUFwcjIwMjZfLm9kcyIsImRiRmlsZUhhc2giOiJkZDlkODM0ODViYmU1YjgyMjUxODg0M2NmMWJmZTU2MzIyNzVkMDYxZDM3YTJhNmNiMTE5MjBiNjQ4ODBjM2MxIn0sImlhdCI6MTc2OTAyMTIzNiwiZXhwIjoxNzY5MDM1NjM2fQ.dz6zvd21kiUn39_dkcSlnNrJAL2PovgRyMvWyVsmfA0&lang=en","error":"Not Found","statusCode":404}

I have tried several type of document but I always get a similar error message

Has anyone experienced that ?

[ppmt]

My bad. I had missed a section related to nginx config (uncommenting the collabora section in nginx.conf)

The files are opening now.