[3.0 & 2.1]: Database Error: syntax error, unexpected '+', expecting FTS_TERM or FTS_NUMB or '*'

[sbulen]

Basic Information

I have started getting errors on my 2.1 forum, which I had recently cut over to using fulltext search. (Previously I had used a custom index, I was trying to see if a fulltext search would resolve other search issues, see #7870...)

I have not been able to reproduce. I am assuming both 2.1 & 3.0 are affected since the codebases are similar.

I was hoping someone familiar with the fulltext syntax could look into this.

The errors are:
Database Error: syntax error, unexpected '+', expecting FTS_TERM or FTS_NUMB or '*'
Database Error: syntax error, unexpected ')', expecting $end

Both errors are on /Sources/SearchAPI-Fulltext.php Line 297
Both errors are on https://yadayada/index.php?action=search2

Steps to reproduce

1. I do not know how to reproduce at this time

Expected result

No response

Actual result

No response

Version/Git revision

2.1.4

Database Engine

MySQL

Database Version

8.0.36

PHP Version

8.2.24

Logs

Errors have the same backtrace:
    #0: smf_db_error()
    Called from /yada/yada/yada/smf/Sources/Subs-Db-mysql.php on line 494
    #1: smf_db_query()
    Called from /yada/yada/yada/smf/Sources/SearchAPI-Fulltext.php on line 297
    #2: indexedWordQuery()
    Called from /yada/yada/yada/smf/Sources/Search.php on line 1588
    #3: PlushSearch2()
    Called from /yada/yada/yada/smf/index.php on line 224

Additional Information

No response