Cross-reference that with the list of cipher suits your server offers from the page I linked to above. You'll see the first possible cipher suite of your server which is listed in the clients supported cipher suits is TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA (0xc014). And that suite is blacklisted.
Possible options:
Fix your servers cipher suites. The list of cipher suites now currently used is like.. Ancient? An usefull method is using the Mozilla SSL Configuration Generator.
Disable HTTP2. But that won't change the fact you're using ancient cipher suites and possibly not getting the optimal encryption.