2017-09-12 9:16:16 140736413361088 [ERROR] InnoDB: Attempted to open a previously opened tablespace. Previous tablespace mysql/gtid_slave_pos uses space ID: 3 at filepath: ./mysql/gtid_slave_pos.ibd. Cannot open tablespace mysql/slave_relay_log_info which uses space ID: 3 at filepath: ./mysql/slave_relay_log_info.ibd
Here's my full log on pastebin: https://pastebin.com/R4UxcscW
If I edit my.cnf and add innodb_force_recovery = 1, start MySQL, stop it, remove what I added, then start it again, it works. But, it doesn't seem to last forever as when I tried again in the morning I got the same problem again.
Any ideas?