Data360 Analyze error importing .lna files into 3.6.x

After upgrading to Data360 Analyze version 3.6.x, you may encounter the following error while uploading LNA files:

Required request part 'file' is not present 
Error code: org.springframework.web.multipart.support.MissingServletRequestPartException

This error should only occur if you have HTTPS enabled. 

BACKGROUND:

When we upgraded Tomcat in 3.6.0, it unfortunately introduced a bug, which Tomcat are planning to fix in their next release, but in the meantime we have a workaround.

WORKAROUND:

In the HTTPS setup documentation, we instruct customers to make some config changes to this file: <Data360Analyze installation directory>\tomcat\conf\server.xml by adding the following:

<Connector protocol="org.apache.coyote.http11.Http11NioProtocol"
port="8443" maxThreads="200"
scheme="https" secure="true" SSLEnabled="true"
keystoreFile="conf/keystore.jks" keystorePass="changeit"
clientAuth="false" sslProtocol="TLS"/>

The workaround for this issue is to 
- stop Analyze
- change the top line to use the org.apache.coyote.http11.Http11Nio2Protocol protocol
- restart Analyze

So the above becomes:

<Connector protocol="org.apache.coyote.http11.Http11Nio2Protocol"
port="8443" maxThreads="200"
scheme="https" secure="true" SSLEnabled="true"
keystoreFile="conf/keystore.jks" keystorePass="changeit"
clientAuth="false" sslProtocol="TLS"/>