After using the conversion API to obtain the download link, the download link cannot be accessed

I am using version 7.2.1-34 deployed by docker.
After using the conversion API, I obtained the file download link, but a 405 error occurred in this download link.

An error occurred after accessing the link.
405 Not Allowed
405 Not Allowed
Then I entered the docker container and looked for this directory and found the output.pdf file. This is the converted file, but it is different from the directory of the URL.
root@1cdf939e513f:/var/lib/onlyoffice/documentserver/App_Data/cache/files/data/conv_4808da156499242ec0d150a9710a52c51698647918384_pdf# ll
total 436
drwxr-xr-x. 2 ds ds 24 Oct 30 18:33 ./
drwxr-xr-x. 472 ds ds 32768 Oct 30 18:33 …/
-rw-r–r–. 1 ds ds 408282 Oct 30 18:33 output.pdf

Hello @wxyclub

First of all, please note that you are using very outdated version of Document Server. Please try updating it to the actual version in the first place and then checking situation again.

Additionally, please refer to this post for additional information: