Change 530413 had a related patch set uploaded (by DannyS712; owner: DannyS712):
[operations/mediawiki-config@master] Add WS and CAT as aliases for zhwikisource namespaces

https://gerrit.wikimedia.org/r/530413

Change 530413 merged by jenkins-bot:
[operations/mediawiki-config@master] Add WS and CAT as aliases for zhwikisource namespaces

https://gerrit.wikimedia.org/r/530413

Mentioned in SAL (#wikimedia-operations) [2019-08-19T18:31:35Z] <urbanecm@deploy1001> Synchronized wmf-config/InitialiseSettings.php: SWAT: b21bbc0: Add WS and CAT as aliases for zhwikisource namespaces (T230548) (duration: 00m 47s)

@Urbanecm This seems to render already existed CAT: and WS: prefixed shortcut in the main namespace unreachable, could you run the script to migrate those? Thanks.

Mentioned in SAL (#wikimedia-operations) [2019-08-21T10:45:48Z] <Urbanecm> Run mwscript namespaceDupes.php --wiki=zhwikisource --add-prefix=FIXME --fix (T230548)

In T230548#5427515, @Viztor wrote:

@Urbanecm This seems to render already existed CAT: and WS: prefixed shortcut in the main namespace unreachable, could you run the script to migrate those? Thanks.

Sure, done. Output is at P8954.

FYi: Several pages needs fixing, they have FIXME prefix.

In T230548#5427875, @Urbanecm wrote:

FYi: Several pages needs fixing, they have FIXME prefix.

Appreciate it. Will fix those ASAP.

Thank you.