Note: This bug is displayed in read-only format because the product is no longer active in Red Hat Bugzilla.

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Description of problem:


Version-Release number of selected component (if applicable):
yelp-3.28.1-3.el8.x86_64

How reproducible:
always

Steps to Reproduce:
1.Run yelp from terminal
2.Click Menu -> All Help


Actual results:
I/O error : Attempt to load network entity http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd
I/O error : Attempt to load network entity http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd
I/O error : Attempt to load network entity http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd
I/O error : Attempt to load network entity http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd
I/O error : Attempt to load network entity http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd


Expected results:
I don't understand those errors at all because the links are working

Same Machine:
➜  ~ wget http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd
--2019-06-17 17:00:14--  http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd
Resolving www.oasis-open.org (www.oasis-open.org)... 172.99.100.168
Connecting to www.oasis-open.org (www.oasis-open.org)|172.99.100.168|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 4658 (4.5K) [application/xml-dtd]
Saving to: ‘docbookx.dtd’

docbookx.dtd        100%[===================>]   4.55K  --.-KB/s    in 0s      

2019-06-17 17:00:14 (347 MB/s) - ‘docbookx.dtd’ saved [4658/4658]

Yelp will not fetch those over the network, and if you do not have the DTDs installed, will not be able to validate against them, but the warning is harmless. Installing the package docbook-dtds will make the warning go away.