Comment 17 for bug 1897561

The suggested solution for removing "libnginx-mod-http-perl" doesn't probably make the situation better but worse because it would uninstall "onlyoffice-documentserver" which is unwanted:

"kalmer@test:~$ sudo apt remove libnginx-mod-http-perl
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
  cabextract libmspack0 libnginx-mod-http-auth-pam libnginx-mod-http-cache-purge libnginx-mod-http-dav-ext libnginx-mod-http-echo
  libnginx-mod-http-fancyindex libnginx-mod-http-geoip libnginx-mod-http-geoip2 libnginx-mod-http-headers-more-filter libnginx-mod-http-lua
  libnginx-mod-http-ndk libnginx-mod-http-subs-filter libnginx-mod-http-uploadprogress libnginx-mod-http-upstream-fair libnginx-mod-nchan
  ttf-mscorefonts-installer
Use 'sudo apt autoremove' to remove them.
The following additional packages will be installed:
  nginx-core
Soovituslikud paketid:
  nginx-doc
EEMALDATAKSE järgnevad paketid:
  libnginx-mod-http-perl nginx-extras onlyoffice-documentserver
Paigaldatakse järgnevad UUED paketid:
  nginx-core
0 uuendatud, 1 värskelt paigaldatud, 3 eemaldada ja 0 uuendamata.
On vaja tõmmata 425 kB arhiive.
Pärast seda tegevust vabaneb 949 MB kettaruumi.
Do you want to continue? [Y/n] n
Katkesta."

I disabled the module instead:
"kalmer@test:/etc/nginx/modules-enabled$ sudo rm 50-mod-http-perl.conf"

So far, "nginx" hasn't crashed after multiple reloading and "onlyoffice-documentserver" also seems to work.