Hit enter and do nothing

This error occurs in one instance of our environment, but not in the rest. This error occurs when pressing Enter does nothing and returns no error. There is no temporary table created (_xxx_gho, _xxx_ghc), I printed the log with the debug option, see the log below.
```
2020-08-21 16:02:51 ERROR Maximal timeout is 10sec. Timeout remains at 3
2020-08-21 16:02:51 INFO starting gh-ost 1.0.49
2020-08-21 16:02:51 INFO Migrating `aaaa`.`user_segment`
2020-08-21 16:02:51 INFO connection validated on 10.10.1.10:2321
2020-08-21 16:02:51 INFO User has SUPER, REPLICATION SLAVE privileges, and has ALL privileges on `aaaa`.*
2020-08-21 16:02:51 INFO binary logs validated on 10.10.1.10:2321
2020-08-21 16:02:51 INFO Restarting replication on 10.10.1.10:2321 to make sure binlog settings apply to replication thread
2020-08-21 16:02:51 INFO Inspector initiated on db546.add.bjyt.qihoo.net:2321, version 5.6.19-log
2020-08-21 16:02:51 INFO Table found. Engine=InnoDB
2020-08-21 16:02:51 DEBUG Estimated number of rows via STATUS: 0
```
There are no other logs

version 1.0.48 and 1.0.49