Execute failed: NAMESPACE_ERR: An attempt is made to create or change an object in a way which is incorrect with regard to namespaces.

KNIME Analytics Platform
1

Hello all,

I am using the new WebPage Retriever node, and running into issues where the XML is is not validate. For e.g. see the following URL
https://bcbsfl.referrals.selectminds.com/jobs/florida-blue-medicare-service-advocate-iv-appeals-disputes-7474

WebPage Retriever node throws the following error:
Execute failed: NAMESPACE_ERR: An attempt is made to create or change an object in a way which is incorrect with regard to namespaces.

Is there a way to tell the WebPage Retriever node to not validate the XML or at least do not fail on invalid HTML (XML)?

Thanks! :slight_smile:

2

Hi @saqib,

If you uncheck the “Output as XML” option the node will execute successfully and the output will be string. Then you can use the Strings to Binary Objects node and pass its output to the HTML Parser (the output column name in the Webpage Retriever node must be changed). This will solve the problem. Of course this does not make sense here since we can use the HTTP Retriever node without any problems.

:blush:

1 Like
3

Right. I wanted to replace HTTP Retriever and HTML Parser with the Webpage Retriever.

Webpage Retriever needs to have an config option to not fail on invalid HTML/XML, or at least an option to continue on Failure.

4

@saqib,

we are currently working on this issue. Thanks for reporting it.

Best
Mark

5 Likes
5

Hello @Mark_Ortmann, any updates on this? Thanks! :slight_smile:

6

Hello @saqib,

yes, we have some updates! We found the issue and fixed it, i.e., it will be available with the next release (4.1.1). However, if you don’t want to wait until then, you could download our nightly build in which it’s already available (https://www.knime.com/form/nightly-build). If you do so, we are happy to receive your feedback if you encounter any other issues!

Btw, the webpage you posted above is working now. It seems like they fixed the issue (unbound prefixes of namespaces).

Best,
Simon

3 Likes
7

@SimonS, that’s good news. I am unable to install Nightly release on my laptop. When will the 4.1.1 be officially released?

Thanks,
Saqib

8

@saqib it’s planned for next month but no fixed date yet.

Best,
Simon

9

@SimonS, confirming that this issue has been fixed in 4.1.1. Thanks! :slight_smile:

3 Likes
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