It seems to work for me. Could you send me your Teleporter file via PM? You may need to encapsulate it into another zip container for uploading it here.
v4:
pi@raspberrypi:~ $ pihole -v
Pi-hole version is v4.3.2 (Latest: v4.3.2)
AdminLTE version is v4.3.3 (Latest: v4.3.3)
FTL version is v4.3.1 (Latest: v4.3.1)
v5b:
pi@raspberry:~ $ pihole -v
Pi-hole version is v4.3.2-425-g839fe32 (Latest: v4.3.2)
AdminLTE version is v4.3.2-428-gf13c52f (Latest: v4.3.3)
FTL version is vDev-1344c91 (Latest: v4.3.1)
pi@raspberry:~ $ sudo tail /var/log/lighttpd/error.log
2020-02-21 16:20:04: (mod_fastcgi.c.421) FastCGI-stderr: PHP Warning: SQLite3::exec(): cannot start a transaction within a transaction in /var/www/html/admin/scripts/pi-hole/php/database.php on line 102
2020-02-21 20:08:13: (server.c.2059) server stopped by UID = 0 PID = 1
2020-02-21 20:08:14: (server.c.1464) server started (lighttpd/1.4.53)
2020-02-21 20:08:14: (server.c.1493) WARNING: unknown config-key: alias.url (ignored)
2020-02-21 20:08:53: (mod_fastcgi.c.421) FastCGI-stderr: PHP Warning: SQLite3::exec(): no such column: type in /var/www/html/admin/scripts/pi-hole/php/teleporter.php on line 257
2020-02-21 20:08:53: (mod_fastcgi.c.421) FastCGI-stderr: PHP Warning: SQLite3::exec(): no such column: type in /var/www/html/admin/scripts/pi-hole/php/teleporter.php on line 257
2020-02-21 20:08:53: (mod_fastcgi.c.421) FastCGI-stderr: PHP Warning: SQLite3::prepare(): Unable to prepare statement: 1, table domain_audit has no column named comment in /var/www/html/admin/scripts/pi-hole/php/database.php on line 140
2020-02-21 20:08:53: (mod_fastcgi.c.421) FastCGI-stderr: PHP Warning: SQLite3::exec(): cannot start a transaction within a transaction in /var/www/html/admin/scripts/pi-hole/php/database.php on line 102
2020-02-21 20:08:53: (mod_fastcgi.c.421) FastCGI-stderr: PHP Warning: SQLite3::exec(): cannot start a transaction within a transaction in /var/www/html/admin/scripts/pi-hole/php/database.php on line 102
2020-02-21 20:08:53: (mod_fastcgi.c.421) FastCGI-stderr: PHP Warning: SQLite3::exec(): cannot start a transaction within a transaction in /var/www/html/admin/scripts/pi-hole/php/database.php on line 102
pi@raspberry:~ $
Ah, interesting. There is an SQLite3 binding error here. By chance, I've written some code earlier today that should fix this. Please try again importing your file after running