12.2.0.1 db UTL_HTTP results in ORA-29273 and ORA-28750

Oracle 12.2.0.1 database with ACL configured for "someServer.someProvince.ca" and wallet created with 2 trusted certificates in it from the someServer server and saved to default system location.

select utl_http.request('https://someServer.someProvince.ca:999',null,'file:/u02/app/oracle/product/12.2/owm/wallets/oracle','someWalletPassword', https_host=>'www.someServer.someProvince.ca') from dual;

ORA-28750: unknown error

ORA-06512: at "SYS.UTL_HTTP", line 1501

ORA-06512: at "SYS.UTL_HTTP", line 380

ORA-06512: at "SYS.UTL_HTTP", line 1441

ORA-06512: at line 1

Everything we try results in ORA-29273: HTTP request failed followed by ORA-28750: unknown error

Just as the server name is not the one we actually use, 999 is not the port we use either - just placed here for an example of the syntax.