Subversion checkout not working in terminal over HTTPS Ubuntu 16.04

I am facing an issue while trying to checkout a project on the server using "svn co" command. Checking out and updating with softwares like TortoiseSVN or PHPStorm work properly over HTTPS, only the terminal wont work. I have set up previously similar servers but never with https support. I am using a Positive SSL that i have set up over ISPConfig 3.1 for the domain in question. While trying to check out the project with the following command:

svn co --username myusername https://example.com/svn/project /var/www/project

I get the following error:

   svn: E170013: Unable to connect to a repository at URL https://example.com/svn/project    svn: E120171: Error running context: An error occurred during SSL communication

The svn project and the folder where the project should go are set to chown www-data.

My dav_svn.conf containes the following:

<Location /svn/>  DAV svn  SVNParentPath /svn  AuthType Basic  AuthName "Subversion Repository"  AuthUserFile /etc/apache2/dav_svn.passwd  SSLRequireSSL<LimitExcept GET PROPFIND OPTIONS REPORT>    Require valid-user</LimitExcept></Location>

Don't know if software like clamav or similar can cause this problems like blocking the communication?

My svn version information is as follows:

svn, version 1.9.3 (r1718519)   compiled Aug 10 2017, 16:59:15 on x86_64-pc-linux-gnuCopyright (C) 2015 The Apache Software Foundation.This software consists of contributions made by many people;see the NOTICE file for more information.Subversion is open source software, see http://subversion.apache.org/The following repository access (RA) modules are available:* ra_svn : Module for accessing a repository using the svn network protocol.  - with Cyrus SASL authentication  - handles 'svn' scheme* ra_local : Module for accessing a repository on local disk.  - handles 'file' scheme* ra_serf : Module for accessing a repository via WebDAV protocol using serf.  - using serf 1.3.8 (compiled with 1.3.8)  - handles 'http' scheme  - handles 'https' schemeThe following authentication credential caches are available:* Plaintext cache in /root/.subversion* Gnome Keyring* GPG-Agent* KWallet (KDE)System information:* running on x86_64-unknown-linux-gnu  - Ubuntu 16.04.3 LTS (xenial) [Linux 4.4.0-93-generic]* linked dependencies:  - APR 1.5.2 (compiled with 1.5.2)  - APR-Util 1.5.4 (compiled with 1.5.4)  - Expat 2.1.0 (compiled with 2.1.0)  - SQLite 3.11.0 (compiled with 3.11.0)  - Utf8proc 1.1.5 (compiled with 1.1.5)  - ZLib 1.2.8 (compiled with 1.2.8)