Importing Oracle12c database
Looks like your oracle directory doesn't exists. You will need to log into the database, create a directory, and retry your import

export ORACLE_HOME=/path/to/oracle/home
export ORACLE_SID=YOUR_SID    
sqlplus / as sysdba
create directory DUMPS as '/path/to/your/dump/files';
exit;


And retry your import. Pending on the user you are using to do the import, you may need to grant read/write access.