JAVA-trustAnchors parameter must not be non-empty

I recently installed Kubuntu 18.04. In order to reach to my company e-mail on office365 Outlook, also installed DavMail. Then started to configure my Kmail. But when I start checking my e-mails to download as fresh on my KMail, then everything is stopping down by a notification from DavMail saying:
DavMail configuration exception. Connect exception
: ssl. SSLException java.lang.RuntimeException
:Unexpected error: InvalidAlgorithmParameterException
: the trustAnchors parameter must be non-empty
I am in need to solve this issue in order to reach to my e-mails with KMail or I can install and use ThunderBird also. I need to find a solution to this subject.
While installing Kubuntu 18.04, I choosed to manually arrange drives and I arranged “/” and “/home” separately and two of them I checked for formatting, so that I can be able to have full clear install from scratch.
Please help me to solve the issue

I’ve moved this to the category because this site isn’t designed to take tech support questions. Sorry. I’d recommend using one of the official support channels listed on the page