Apache ExpiresDefault A0不工作

我添加了以下配置:

# No caching for dynamic files
<filesMatch "\.(php|cgi|pl|htm)$">
    ExpiresDefault A0
    Header set Cache-Control "no-store, no-cache, must-revalidate, max-age=0"
    Header set Pragma "no-cache"
</filesMatch>

但显示了以下错误:

AH00526: Syntax error on line 86 of /etc/apache2/conf-enabled/headers.conf: Invalid command 'ExpiresDefault', perhaps misspelled or defined by a module not included in the server configuration Action '-t' failed.