I'm new to Review Board. Yesterday I tried to add slack integration on Review Board 2.5 and since then I have issue with httpd.
[root@my ~]# systemctl status httpd
● httpd.service - The Apache HTTP Server
Loaded: loaded (/usr/lib/systemd/system/httpd.service; enabled; vendor preset : disabled)
Drop-In: /usr/lib/systemd/system/httpd.service.d
└─reviewboard-sites.conf
Active: failed (Result: exit-code) since Wed 2020-07-15 12:13:51 CEST; 2min 5 8s ago
Docs: man:httpd(8)
man:apachectl(8)
Process: 2066 ExecStartPre=/usr/bin/rb-site upgrade --all-sites (code=exited, status=1/FAILURE)
Jul 15 12:13:51 my.review.meter rb-site[2066]: File "/usr/bin/rb-site", line...>
Jul 15 12:13:51 my.review.meter rb-site[2066]: from pkg_resources import loa...t
Jul 15 12:13:51 my.review.meter rb-site[2066]: File "/usr/lib/python2.7/site...>
Jul 15 12:13:51 my.review.meter rb-site[2066]: parse_requirements(__requires...)
Jul 15 12:13:51 my.review.meter rb-site[2066]: File "/usr/lib/python2.7/site...e
Jul 15 12:13:51 my.review.meter rb-site[2066]: raise DistributionNotFound(req)
Jul 15 12:13:51 my.review.meter rb-site[2066]: pkg_resources.DistributionNot...1
Jul 15 12:13:51 my.review.meter systemd[1]: Failed to start The Apache HTTP ....
Jul 15 12:13:51 my.review.meter systemd[1]: Unit httpd.service entered faile....
Jul 15 12:13:51 my.review.meter systemd[1]: httpd.service failed.
Hint: Some lines were ellipsized, use -l to show in full.
[root@my ~]#