Issue with `ibtmp1` file preventing start up (no replies)

I've been working with MySQL 8 within Ubuntu 18.04 for several weeks without issue. My MySQL installation exists on an external HD.

Earlier, I undocked my laptop, then later redocked and wasn't able to stop/start MySQL. Killing existing MySQL processes and restarting didn't work either. I've also restarted my machine without effect.

Checking the error.log file, the first error included was:
"File ibtmp1: 'stat' returned OS error 105."


The following is the output of `journalctl -xe`:

chris@chris-x1c6:/etc/mysql/mysql.conf.d$ journalctl -xe
Apr 01 18:39:30 chris-x1c6 telegraf[1341]: 2020-04-02T01:39:30Z E! [agent] Error writing to outputs.influxdb: could not write any address
Apr 01 18:39:40 chris-x1c6 telegraf[1341]: 2020-04-02T01:39:40Z E! [outputs.influxdb] When writing to [http://localhost:8086]: Post http://localhost:8086/write?db=tel
Apr 01 18:39:40 chris-x1c6 telegraf[1341]: 2020-04-02T01:39:40Z E! [agent] Error writing to outputs.influxdb: could not write any address
Apr 01 18:39:50 chris-x1c6 telegraf[1341]: 2020-04-02T01:39:50Z E! [outputs.influxdb] When writing to [http://localhost:8086]: Post http://localhost:8086/write?db=tel
Apr 01 18:39:50 chris-x1c6 telegraf[1341]: 2020-04-02T01:39:50Z E! [agent] Error writing to outputs.influxdb: could not write any address
Apr 01 18:40:00 chris-x1c6 telegraf[1341]: 2020-04-02T01:40:00Z E! [outputs.influxdb] When writing to [http://localhost:8086]: Post http://localhost:8086/write?db=tel
Apr 01 18:40:00 chris-x1c6 telegraf[1341]: 2020-04-02T01:40:00Z E! [agent] Error writing to outputs.influxdb: could not write any address
Apr 01 18:40:10 chris-x1c6 telegraf[1341]: 2020-04-02T01:40:10Z E! [outputs.influxdb] When writing to [http://localhost:8086]: Post http://localhost:8086/write?db=tel
Apr 01 18:40:10 chris-x1c6 telegraf[1341]: 2020-04-02T01:40:10Z E! [agent] Error writing to outputs.influxdb: could not write any address
Apr 01 18:40:20 chris-x1c6 telegraf[1341]: 2020-04-02T01:40:20Z E! [outputs.influxdb] When writing to [http://localhost:8086]: Post http://localhost:8086/write?db=tel
Apr 01 18:40:20 chris-x1c6 telegraf[1341]: 2020-04-02T01:40:20Z E! [agent] Error writing to outputs.influxdb: could not write any address
Apr 01 18:40:30 chris-x1c6 telegraf[1341]: 2020-04-02T01:40:30Z E! [outputs.influxdb] When writing to [http://localhost:8086]: Post http://localhost:8086/write?db=tel
Apr 01 18:40:30 chris-x1c6 telegraf[1341]: 2020-04-02T01:40:30Z E! [agent] Error writing to outputs.influxdb: could not write any address
Apr 01 18:40:40 chris-x1c6 telegraf[1341]: 2020-04-02T01:40:40Z E! [outputs.influxdb] When writing to [http://localhost:8086]: Post http://localhost:8086/write?db=tel
Apr 01 18:40:40 chris-x1c6 telegraf[1341]: 2020-04-02T01:40:40Z E! [agent] Error writing to outputs.influxdb: could not write any address
Apr 01 18:40:50 chris-x1c6 telegraf[1341]: 2020-04-02T01:40:50Z E! [outputs.influxdb] When writing to [http://localhost:8086]: Post http://localhost:8086/write?db=tel
Apr 01 18:40:50 chris-x1c6 telegraf[1341]: 2020-04-02T01:40:50Z E! [agent] Error writing to outputs.influxdb: could not write any address
Apr 01 18:41:00 chris-x1c6 telegraf[1341]: 2020-04-02T01:41:00Z E! [outputs.influxdb] When writing to [http://localhost:8086]: Post http://localhost:8086/write?db=tel
Apr 01 18:41:00 chris-x1c6 telegraf[1341]: 2020-04-02T01:41:00Z E! [agent] Error writing to outputs.influxdb: could not write any address
Apr 01 18:41:01 chris-x1c6 sudo[4168]: chris : TTY=pts/0 ; PWD=/etc/mysql/mysql.conf.d ; USER=root ; COMMAND=/usr/bin/vim mysqld.cnf
Apr 01 18:41:01 chris-x1c6 sudo[4168]: pam_unix(sudo:session): session opened for user root by (uid=0)
Apr 01 18:41:10 chris-x1c6 telegraf[1341]: 2020-04-02T01:41:10Z E! [outputs.influxdb] When writing to [http://localhost:8086]: Post http://localhost:8086/write?db=tel
Apr 01 18:41:10 chris-x1c6 telegraf[1341]: 2020-04-02T01:41:10Z E! [agent] Error writing to outputs.influxdb: could not write any address
Apr 01 18:41:14 chris-x1c6 sudo[4168]: pam_unix(sudo:session): session closed for user root
Apr 01 18:41:20 chris-x1c6 telegraf[1341]: 2020-04-02T01:41:20Z E! [outputs.influxdb] When writing to [http://localhost:8086]: Post http://localhost:8086/write?db=tel
Apr 01 18:41:20 chris-x1c6 telegraf[1341]: 2020-04-02T01:41:20Z E! [agent] Error writing to outputs.influxdb: could not write any address
Apr 01 18:41:22 chris-x1c6 sudo[4173]: chris : TTY=pts/0 ; PWD=/etc/mysql/mysql.conf.d ; USER=root ; COMMAND=/bin/systemctl restart mysql
Apr 01 18:41:22 chris-x1c6 sudo[4173]: pam_unix(sudo:session): session opened for user root by (uid=0)
Apr 01 18:41:22 chris-x1c6 systemd[1]: Starting MySQL Community Server...
-- Subject: Unit mysql.service has begun start-up
-- Defined-By: systemd
-- Support: http://www.ubuntu.com/support
--
-- Unit mysql.service has begun starting up.
Apr 01 18:41:22 chris-x1c6 audit[4214]: AVC apparmor="STATUS" operation="profile_replace" info="same as current profile, skipping" profile="unconfined" name="/usr/sbi
Apr 01 18:41:22 chris-x1c6 kernel: audit: type=1400 audit(1585791682.149:59): apparmor="STATUS" operation="profile_replace" info="same as current profile, skipping" p
Apr 01 18:41:22 chris-x1c6 systemd[1]: mysql.service: Main process exited, code=exited, status=1/FAILURE
Apr 01 18:41:22 chris-x1c6 systemd[1]: mysql.service: Failed with result 'exit-code'.
Apr 01 18:41:22 chris-x1c6 systemd[1]: Failed to start MySQL Community Server.
-- Subject: Unit mysql.service has failed
-- Defined-By: systemd
-- Support: http://www.ubuntu.com/support
--
-- Unit mysql.service has failed.
--
-- The result is RESULT.
Apr 01 18:41:22 chris-x1c6 sudo[4173]: pam_unix(sudo:session): session closed for user root
Apr 01 18:41:30 chris-x1c6 telegraf[1341]: 2020-04-02T01:41:30Z E! [outputs.influxdb] When writing to [http://localhost:8086]: Post http://localhost:8086/write?db=tel
Apr 01 18:41:30 chris-x1c6 telegraf[1341]: 2020-04-02T01:41:30Z E! [agent] Error writing to outputs.influxdb: could not write any address
lines 1186-1234/1234 (END)
Apr 01 18:39:30 chris-x1c6 telegraf[1341]: 2020-04-02T01:39:30Z E! [agent] Error writing to outputs.influxdb: could not write any address
Apr 01 18:39:40 chris-x1c6 telegraf[1341]: 2020-04-02T01:39:40Z E! [outputs.influxdb] When writing to [http://localhost:8086]: Post http://localhost:8086/write?db=telegraf: dial tcp 127.0.0.1:8086: connect: conn
Apr 01 18:39:40 chris-x1c6 telegraf[1341]: 2020-04-02T01:39:40Z E! [agent] Error writing to outputs.influxdb: could not write any address
Apr 01 18:39:50 chris-x1c6 telegraf[1341]: 2020-04-02T01:39:50Z E! [outputs.influxdb] When writing to [http://localhost:8086]: Post http://localhost:8086/write?db=telegraf: dial tcp 127.0.0.1:8086: connect: conn
Apr 01 18:39:50 chris-x1c6 telegraf[1341]: 2020-04-02T01:39:50Z E! [agent] Error writing to outputs.influxdb: could not write any address
Apr 01 18:40:00 chris-x1c6 telegraf[1341]: 2020-04-02T01:40:00Z E! [outputs.influxdb] When writing to [http://localhost:8086]: Post http://localhost:8086/write?db=telegraf: dial tcp 127.0.0.1:8086: connect: conn
Apr 01 18:40:00 chris-x1c6 telegraf[1341]: 2020-04-02T01:40:00Z E! [agent] Error writing to outputs.influxdb: could not write any address
Apr 01 18:40:10 chris-x1c6 telegraf[1341]: 2020-04-02T01:40:10Z E! [outputs.influxdb] When writing to [http://localhost:8086]: Post http://localhost:8086/write?db=telegraf: dial tcp 127.0.0.1:8086: connect: conn
Apr 01 18:40:10 chris-x1c6 telegraf[1341]: 2020-04-02T01:40:10Z E! [agent] Error writing to outputs.influxdb: could not write any address
Apr 01 18:40:20 chris-x1c6 telegraf[1341]: 2020-04-02T01:40:20Z E! [outputs.influxdb] When writing to [http://localhost:8086]: Post http://localhost:8086/write?db=telegraf: dial tcp 127.0.0.1:8086: connect: conn
Apr 01 18:40:20 chris-x1c6 telegraf[1341]: 2020-04-02T01:40:20Z E! [agent] Error writing to outputs.influxdb: could not write any address
Apr 01 18:40:30 chris-x1c6 telegraf[1341]: 2020-04-02T01:40:30Z E! [outputs.influxdb] When writing to [http://localhost:8086]: Post http://localhost:8086/write?db=telegraf: dial tcp 127.0.0.1:8086: connect: conn
Apr 01 18:40:30 chris-x1c6 telegraf[1341]: 2020-04-02T01:40:30Z E! [agent] Error writing to outputs.influxdb: could not write any address
Apr 01 18:40:40 chris-x1c6 telegraf[1341]: 2020-04-02T01:40:40Z E! [outputs.influxdb] When writing to [http://localhost:8086]: Post http://localhost:8086/write?db=telegraf: dial tcp 127.0.0.1:8086: connect: conn
Apr 01 18:40:40 chris-x1c6 telegraf[1341]: 2020-04-02T01:40:40Z E! [agent] Error writing to outputs.influxdb: could not write any address
Apr 01 18:40:50 chris-x1c6 telegraf[1341]: 2020-04-02T01:40:50Z E! [outputs.influxdb] When writing to [http://localhost:8086]: Post http://localhost:8086/write?db=telegraf: dial tcp 127.0.0.1:8086: connect: conn
Apr 01 18:40:50 chris-x1c6 telegraf[1341]: 2020-04-02T01:40:50Z E! [agent] Error writing to outputs.influxdb: could not write any address
Apr 01 18:41:00 chris-x1c6 telegraf[1341]: 2020-04-02T01:41:00Z E! [outputs.influxdb] When writing to [http://localhost:8086]: Post http://localhost:8086/write?db=telegraf: dial tcp 127.0.0.1:8086: connect: conn
Apr 01 18:41:00 chris-x1c6 telegraf[1341]: 2020-04-02T01:41:00Z E! [agent] Error writing to outputs.influxdb: could not write any address
Apr 01 18:41:01 chris-x1c6 sudo[4168]: chris : TTY=pts/0 ; PWD=/etc/mysql/mysql.conf.d ; USER=root ; COMMAND=/usr/bin/vim mysqld.cnf
Apr 01 18:41:01 chris-x1c6 sudo[4168]: pam_unix(sudo:session): session opened for user root by (uid=0)
Apr 01 18:41:10 chris-x1c6 telegraf[1341]: 2020-04-02T01:41:10Z E! [outputs.influxdb] When writing to [http://localhost:8086]: Post http://localhost:8086/write?db=telegraf: dial tcp 127.0.0.1:8086: connect: conn
Apr 01 18:41:10 chris-x1c6 telegraf[1341]: 2020-04-02T01:41:10Z E! [agent] Error writing to outputs.influxdb: could not write any address
Apr 01 18:41:14 chris-x1c6 sudo[4168]: pam_unix(sudo:session): session closed for user root
Apr 01 18:41:20 chris-x1c6 telegraf[1341]: 2020-04-02T01:41:20Z E! [outputs.influxdb] When writing to [http://localhost:8086]: Post http://localhost:8086/write?db=telegraf: dial tcp 127.0.0.1:8086: connect: conn
Apr 01 18:41:20 chris-x1c6 telegraf[1341]: 2020-04-02T01:41:20Z E! [agent] Error writing to outputs.influxdb: could not write any address
Apr 01 18:41:22 chris-x1c6 sudo[4173]: chris : TTY=pts/0 ; PWD=/etc/mysql/mysql.conf.d ; USER=root ; COMMAND=/bin/systemctl restart mysql
Apr 01 18:41:22 chris-x1c6 sudo[4173]: pam_unix(sudo:session): session opened for user root by (uid=0)
Apr 01 18:41:22 chris-x1c6 systemd[1]: Starting MySQL Community Server...
-- Subject: Unit mysql.service has begun start-up
-- Defined-By: systemd
-- Support: http://www.ubuntu.com/support
--
-- Unit mysql.service has begun starting up.
Apr 01 18:41:22 chris-x1c6 audit[4214]: AVC apparmor="STATUS" operation="profile_replace" info="same as current profile, skipping" profile="unconfined" name="/usr/sbin/mysqld" pid=4214 comm="apparmor_parser"
Apr 01 18:41:22 chris-x1c6 kernel: audit: type=1400 audit(1585791682.149:59): apparmor="STATUS" operation="profile_replace" info="same as current profile, skipping" profile="unconfined" name="/usr/sbin/mysqld" p
Apr 01 18:41:22 chris-x1c6 systemd[1]: mysql.service: Main process exited, code=exited, status=1/FAILURE
Apr 01 18:41:22 chris-x1c6 systemd[1]: mysql.service: Failed with result 'exit-code'.
Apr 01 18:41:22 chris-x1c6 systemd[1]: Failed to start MySQL Community Server.
-- Subject: Unit mysql.service has failed
-- Defined-By: systemd
-- Support: http://www.ubuntu.com/support
--
-- Unit mysql.service has failed.
--
-- The result is RESULT.
Apr 01 18:41:22 chris-x1c6 sudo[4173]: pam_unix(sudo:session): session closed for user root
Apr 01 18:41:30 chris-x1c6 telegraf[1341]: 2020-04-02T01:41:30Z E! [outputs.influxdb] When writing to [http://localhost:8086]: Post http://localhost:8086/write?db=telegraf: dial tcp 127.0.0.1:8086: connect: conn
Apr 01 18:41:30 chris-x1c6 telegraf[1341]: 2020-04-02T01:41:30Z E! [agent] Error writing to outputs.influxdb: could not write any address