Confluence XML importer breaks pages with slash character

The error reported by Tomcat looks like:

HTTP Status 400 – Bad Request
Type Status Report
Message Invalid URI: noSlash
Description The server cannot or will not process the request due to something that is perceived to be a client error (e.g., malformed request syntax, invalid request message framing, or deceptive request routing).
Apache Tomcat/8.5.61

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Steps to reproduce:

1. Create a Confluence with one or more pages containing "slash" --> "/" in the page title.

2. Export the Space to XML and follow the import guide on https://xwiki.com/en/Blog/Confluence-to-XWiki-migration-export-import/

3. The issue appears while loading the imported page in XWiki. It doesn't matter if you run the Nested Pages Migrator Application, the pages with slash don'tload before nor after.

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More details about the platform (not sure if relevant):
Server version name: Apache Tomcat/8.5.61
Server built: Dec 3 2020 14:03:28 UTC
Server version number: 8.5.61.0
OS Name: Linux
OS Version: 4.14.x
Architecture: amd64
Java Home: /volume1/.@plugins/AppCentral/jre
JVM Version: 1.8.0_191-b12
JVM Vendor: Oracle Corporation

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The XML was exported from Confluence 7.0.1

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Side note: I noticed Xwiki itself has no issue creating new pages with "/" in the title, these load normally in Tomcat without an error message appearing.