There were no extensions found matching 'Markdown'

[MyJimmyZhou]

I can’t find some extesions,such like “Markdown”.

but,some extensions can be find like below.

Admin Tools Application

JW Player Macro2.1.10

when I click reindex, a warn log like this:
[extension.index job group daemon thread - org.xwiki.extension.index.internal.job.ExtensionIndexJob@2bc1dabe([extension, index, wiki:xwiki])] WARN o.x.e.i.i.j.ExtensionIndexJob - Failed to get remote extension from repository [extensions.xwiki.org:xwiki:https://extensions.xwiki.org/xwiki/rest]: SSLHandshakeException: Received fatal alert: handshake_failure
(sory, I am allowed to post pic only one)
tomcat version is apache-tomcat-9.0.73
xwiki version is 14.10.6
help me please

[tmortagne]

@MyJimmyZhou

[extension.index job group daemon thread - org.xwiki.extension.index.internal.job.ExtensionIndexJob@2bc1dabe([extension, index, wiki:xwiki])] WARN o.x.e.i.i.j.ExtensionIndexJob - Failed to get remote extension from repository [extensions.xwiki.org:xwiki:https://extensions.xwiki.org/xwiki/rest]: SSLHandshakeException: Received fatal alert: handshake_failure

It’s surprising that you have any extension at all. It seems your JVM does not support https://extensions.xwiki.org SSL certificate for some reason, but it’s strange since Let’s Encrypt is supported by Java 11 and XWiki 14.10.6 cannot run on anything older than Java 11.