NextCloud iOS client REPORT method not supported

Hi,

I've been managed to sign in the FileRun with NextCloud iOS client, but cannot access any files.

When checking up the logs of NextCloud, I got following information:

2021-01-08 09:49:53 Network request started: REPORT https://domain.tld/remote.php/dav/files/NEXTCLOUDTOKEN2

2021-01-08 09:49:53 Network response request: https://domain.tld/remote.php/dav/files/NEXTCLOUDTOKEN2, result: failure(Alamofire.AFError.responseValidationFailed(reason: Alamofire.AFError.ResponseValidationFailureReason.unacceptableStatusCode(code: 501)))

And I checked the Nginx / Apache configuration, and finally found there is no 'REPORT' file under 'system/classes/vendor/FileRun/WebDAV/Methods'

Since the code is ionCubed, so I can't modify to implment 'REPORT' support, then I tried to made a copy from GET.php to REPORT.php, which has no luck.

Is there any chance that you can support the 'REPORT' method? Or anything I can do to made the NextCloud client works?

Thanks.