我试图让 mod_auth_openidc apache 模块在 ubuntu 服务器上运行。我的问题是，apache 无法识别模块的命令，尽管它已启用（使用 apachectl -M 检查）并因 systemctl 的以下消息而崩溃：
● apache2.service - LSB: Apache2 web server
Loaded: loaded (/etc/init.d/apache2; bad; vendor preset: enabled)
Drop-In: /lib/systemd/system/apache2.service.d
└─apache2-systemd.conf
Active: failed (Result: exit-code) since Mo 2016-09-05 15:43:59 CEST; 1min 8s ago
Docs: man:systemd-sysv-generator(8)
Process: 4357 ExecStop=/etc/init.d/apache2 stop (code=exited, status=0/SUCCESS)
Process: 4383 ExecStart=/etc/init.d/apache2 start (code=exited, status=1/FAILURE)
Sep 05 15:43:59 vbox-ubuntu-shib apache2[4383]: * The apache2 configtest failed.
Sep 05 15:43:59 vbox-ubuntu-shib apache2[4383]: Output of config test was:
Sep 05 15:43:59 vbox-ubuntu-shib apache2[4383]: AH00526: Syntax error on line 182 of /etc/apache2/apache2.conf:
Sep 05 15:43:59 vbox-ubuntu-shib apache2[4383]: Invalid command 'OIDCProviderMetadataURL', perhaps misspelled or defined by a module not included in the server configuration
Sep 05 15:43:59 vbox-ubuntu-shib apache2[4383]: Action 'configtest' failed.
Sep 05 15:43:59 vbox-ubuntu-shib apache2[4383]: The Apache error log may have more information.
Sep 05 15:43:59 vbox-ubuntu-shib systemd[1]: apache2.service: Control process exited, code=exited status=1
Sep 05 15:43:59 vbox-ubuntu-shib systemd[1]: Failed to start LSB: Apache2 web server.
Sep 05 15:43:59 vbox-ubuntu-shib systemd[1]: apache2.service: Unit entered failed state.
Sep 05 15:43:59 vbox-ubuntu-shib systemd[1]: apache2.service: Failed with result 'exit-code'.
相关的 apache2.conf 部分：
OIDCProviderMetadataURL testUrl.com
OIDCClientID testId
OIDCClientSecret testSecret
OIDCRedirectURI http://example.de
OIDCCryptoPassphrase testPassword
Alias "/secure-openid" "/var/www/secure"
<Location /secure-openid>
AuthType openid-connect
Require valid-user
</Location>
apachectl -M 的输出：
Loaded Modules:
core_module (static)
so_module (static)
watchdog_module (static)
http_module (static)
log_config_module (static)
logio_module (static)
version_module (static)
unixd_module (static)
access_compat_module (shared)
alias_module (shared)
auth_basic_module (shared)
authopenid_module (shared)
authn_core_module (shared)
authn_file_module (shared)
authz_core_module (shared)
authz_host_module (shared)
authz_user_module (shared)
autoindex_module (shared)
deflate_module (shared)
dir_module (shared)
env_module (shared)
filter_module (shared)
mime_module (shared)
mpm_event_module (shared)
negotiation_module (shared)
setenvif_module (shared)
mod_shib (shared)
status_module (shared)
libapache2-mod-auth-openid 版本：0.8-1build1
apache2版本：2.4.18-2ubuntu3.1
我完全不知道这个问题来自哪里，在此先感谢您的帮助！