Odl-yanglib fails to register provided sources

Registering any models as schemaSource in odl-yanglib will fail at the line:
https://github.com/opendaylight/netconf/blob/master/netconf/yanglib/src/main/java/org/opendaylight/yanglib/impl/YangLibProvider.java#L143

More in provided logs.

Steps to reproduce:
I have used absolute path to "netconf/karaf/target/assembly/cache" with one model "ietf-yang-types" as a value for CacheFolder inside YanglibConfig.
https://github.com/opendaylight/netconf/blob/master/netconf/yanglib/src/main/java/org/opendaylight/yanglib/impl/YangLibProvider.java#L72
(Just hard-code configuration :

        yanglibConfig = new YanglibConfigBuilder()
                .setCacheFolder(FOLDER_PATH)
                .setBindingAddr("localhost")
                .setBindingAddr("8181")
                .build(); 

)

Odl-yanglib feature was installed with command:
feature:install odl-netconf-topology odl-restconf-nb odl-yanglib