BigBlueButton fails to upload presentation - bigbluebutton

Question

I'm using BBB version 1:2.2.0-5 on Ubuntu version 16.04, and from one day to another it suddenly fails to upload a presentation. I already tried doing sudo bbb-conf --restart but nothing. I also tried converting the bigbluebutton.properties with native2ascii but it actually got worse.
This is the error stack:
/var/log/bigbluebutton/bbb-web.2021-09-20.log:2021-09-20T11:04:44.023Z ERROR o.b.p.PresentationUrlDownloadService - Invalid HTTP response=[404] for url=[https://oururl.com/pluginfile.php/271/mod_bigbluebuttonbn/presentation/9abaa22d7f3d68363ce60a45d377edbf/Webinar%20day%201.pdf] with meeting[f4f40140c33569b0f7baa997c70d5a9a0cce5507-1632222283626]
/var/log/bigbluebutton/bbb-web.2021-09-20.log:2021-09-20T11:04:44.023Z ERROR o.b.web.controllers.ApiController - Failed to download presentation=[https://oururl.com/pluginfile.php/271/mod_bigbluebuttonbn/presentation/9abaa22d7f3d68363ce60a45d377edbf/Webinar%20day%201.pdf], meeting=[f4f40140c33569b0f7baa997c70d5a9a0cce5507-1632222283626], fileName=[null]
/var/log/bigbluebutton/bbb-web.2021-09-20.log:2021-09-20T11:04:49.024Z ERROR o.b.p.DocumentConversionServiceImp - Presentation upload failed for meetingId=f4f40140c33569b0f7baa997c70d5a1a0cce5507-1632135883626 presId=1de6396319933dd1ea4a0d5967dbf2dc8decb8c6-1632135883803
/var/log/bigbluebutton/bbb-web.2021-09-20.log:2021-09-20T11:04:49.025Z ERROR o.b.p.DocumentConversionServiceImp - Presentation upload fail reasons [failed_to_download_file]
/var/log/bigbluebutton/bbb-web.2021-09-20.log:2021-09-20T22:44:59.599Z ERROR o.b.p.h.PdfPageCounterHandler - Exception counting images
/var/log/bigbluebutton/bbb-web.2021-09-20.log:2021-09-20T22:44:59.699Z ERROR o.b.p.imp.PresentationFileProcessor - --analytics-- data={"filename":"Webinar%20day%201.pdf","logCode":"determine_num_pages_failed","meetingId":"f4f20140c33569b0f7baa997c70d5a9a0cce5507-1632177893862","message":"Failed to determine number of pages.","podId":"DEFAULT_PRESENTATION_POD","presId":"1de6336319933dd4ea4a0d5967dbf2dc8decb8c6-1632177894042"}
/var/log/bigbluebutton/bbb-web.2021-09-21.log:2021-09-21T07:11:55.754Z ERROR o.b.p.h.PdfPageCounterHandler - Exception counting images
/var/log/bigbluebutton/bbb-web.2021-09-21.log:2021-09-21T07:11:55.754Z ERROR o.b.p.imp.PresentationFileProcessor - --analytics-- data={"filename":"Webinar%20day%201.pdf","logCode":"determine_num_pages_failed","meetingId":"f4f40440c33569b0f7baa997c70d5a9a0cce5507-1632208310241","message":"Failed to determine number of pages.","podId":"DEFAULT_PRESENTATION_POD","presId":"1de6398319933dd4ea4a0d5967dbf2dc8decb8c6-1632208310408"}
-- ERRORS found in /var/log/bigbluebutton/* --
/var/log/bigbluebutton/bbb-web.2021-09-20.log:2021-09-20T22:44:59.599Z ERROR o.b.p.h.PdfPageCounterHandler - Exception counting images
/var/log/bigbluebutton/bbb-web.2021-09-20.log:java.lang.IllegalStateException: No match found
/var/log/bigbluebutton/bbb-web.2021-09-20.log:org.bigbluebutton.presentation.imp.CountingPageException: Exception while trying to determine number of pages.
/var/log/bigbluebutton/bbb-web.2021-09-21.log:2021-09-21T07:11:55.754Z ERROR o.b.p.h.PdfPageCounterHandler - Exception counting images
/var/log/bigbluebutton/bbb-web.2021-09-21.log:java.lang.IllegalStateException: No match found
/var/log/bigbluebutton/bbb-web.2021-09-21.log:org.bigbluebutton.presentation.imp.CountingPageException: Exception while trying to determine number of pages.
I changed the Url and IDs for security reasons. For now, the teachers are sharing their screen as a workaround.