When host the meeting default.pdf is not displaying

[ashish...@gmail.com]

Hello, sir. The default.pdf file is not displaying, even though I am able to upload other PDF files. The newly uploaded PDF file shows a whiteboard with its controls. This happened after I upgraded from bbb-2.6.8 to bbb-2.6.9.

$ bbb-conf --check

Reloading NginX configuration
Starting BigBlueButton

BigBlueButton Server 2.6.9 (1269)
                    Kernel version: 5.15.0-1036-oracle
                      Distribution: Ubuntu 20.04.6 LTS (64-bit)
                            Memory: 8135 MB
                         CPU cores: 4

/etc/bigbluebutton/bbb-web.properties (override for bbb-web)
/usr/share/bbb-web/WEB-INF/classes/bigbluebutton.properties (bbb-web)
       bigbluebutton.web.serverURL: https://meeting.saa9vi.com
                defaultGuestPolicy: ALWAYS_ACCEPT
              defaultMeetingLayout: CUSTOM_LAYOUT

/etc/nginx/sites-available/bigbluebutton (nginx)
                       server_name: meeting.saa9vi.com
                              port: 80, [::]:80
                              port: 443 ssl

/opt/freeswitch/etc/freeswitch/vars.xml (FreeSWITCH)
                       local_ip_v4: 10.0.0.4
                   external_rtp_ip: 152.67.1.161
                   external_sip_ip: 152.67.1.161

/opt/freeswitch/etc/freeswitch/sip_profiles/external.xml (FreeSWITCH)
                        ext-rtp-ip: $${external_rtp_ip}
                        ext-sip-ip: $${external_sip_ip}
                        ws-binding: 152.67.1.161:5066
                       wss-binding: 152.67.1.161:7443

UDP port ranges

                        FreeSWITCH: 16384-24576
                           kurento: 24577-32768
                    bbb-webrtc-sfu: 24577-32768

/usr/local/bigbluebutton/core/scripts/bigbluebutton.yml (record and playback)
                     playback_host: meeting.saa9vi.com
                 playback_protocol: https
                            ffmpeg: 4.2.7-0ubuntu0.1

/usr/share/bigbluebutton/nginx/sip.nginx (sip.nginx)
                        proxy_pass: 152.67.1.161
                          protocol: http

/usr/local/bigbluebutton/bbb-webrtc-sfu/config/default.yml (bbb-webrtc-sfu)
/etc/bigbluebutton/bbb-webrtc-sfu/production.yml (bbb-webrtc-sfu - override)
    mediasoup.webrtc.*.announcedIp: 152.67.1.161
  mediasoup.plainRtp.*.announcedIp: 152.67.1.161
                        kurento.ip: 152.67.1.161
                       kurento.url: ws://127.0.0.1:8888/kurento
                 freeswitch.sip_ip: 152.67.1.161
               recordScreenSharing: true
                     recordWebcams: true
                  codec_video_main: VP8
               codec_video_content: VP8

/usr/share/meteor/bundle/programs/server/assets/app/config/settings.yml (HTML5 client)
/etc/bigbluebutton/bbb-html5.yml (HTML5 client config override)
                             build: 632
                        kurentoUrl: wss://meeting.saa9vi.com/bbb-webrtc-sfu
            defaultFullAudioBridge: sipjs
           defaultListenOnlyBridge: fullaudio
                    sipjsHackViaWs: true


# Potential problems described below
........

#
# Warning: found 'Nil' message in recording processing logs.  Possible GEM errors
#
#  https://github.com/bigbluebutton/bigbluebutton/issues/14287

[Ken Stokes]

I have same error after upgrading to 2.7...  Does anyone have a solution?

Omitted most of the results...

/usr/share/meteor/bundle/programs/server/assets/app/config/settings.yml (HTML5 client)
/etc/bigbluebutton/bbb-html5.yml (HTML5 client config override)

                             build: 164
                        kurentoUrl: wss://bbb26.lutherrice.edu/bbb-webrtc-sfu
            defaultFullAudioBridge: fullaudio

           defaultListenOnlyBridge: fullaudio
                    sipjsHackViaWs: true

# Potential problems described below

#
# Warning: found 'Nil' message in recording processing logs.  Possible GEM errors
#
#  https://github.com/bigbluebutton/bigbluebutton/issues/14287