https://sourceforge.net/p/ibmtpm20tss/tickets/18/ is not a valid URL to a bug.
See Also URLs should point to one of:
show_bug.cgi in a Bugzilla installation.
A bug on launchpad.net
An issue on code.google.com.
A bug on bugs.debian.org.
An issue in a JIRA installation.
A ticket in a Trac installation.
A bug in a MantisBT installation.
A bug on sourceforge.net.
An issue on github.com.
A link on SGI Bugworks.
A feature on FATE.
A support SIL on Unisys.
A VersionOne defect.
An Oracle MetaLink service request.
A TID.
A partner link shortcode
A CVE id
A SMASH issue
An L3 Support incident
If you require additional assistance, please see the 'See Also' Help Guide