Enabling mySQL replication using GTID after purging binlog

I am currently working to get GTID based replication established between mySQL 5.7.33 on 2 servers. Amidst this work, I ran into a disk space issue and purged the binary logs on the master. Now I have run into the problem where I cannot get the replication started due to the missing binary logs. What can I do, without the bin logs, to get replication going? Thanks for any advice!