Database Error: Field 'id_term' doesn't have a default value

[tuivodich]

Describe the bug
You'll get database error when search something!

To Reproduce
Steps to reproduce the behavior:

1. Install the latest SMF2.1 and Optimus mod
2. Go to Optimus settings --> Enable logging of search terms
3. Go to Search page and search anything
4. See error:

Type of error: Database
Database Error: Field 'id_term' doesn't have a default value
http://127.0.0.1/SMF21/index.php?action=search2
C:/Program Files/Ampps/www/SMF21/Sources/Optimus/Subs.php (Line 740)

Environment

• Database Type: MySQL
• Database Version: MySQL 8.0
• PHP Version: 7.3
• SMF Version: 2.1 RC2

P/S: I've changed manually in phpmyadmin to fix this problem (add value AUTO_INCREMENT NOT NULL to id_term in smf_optimus_search_terms)