The SQL queries to update database at install doesn't cope well with the AUTOINCREMENT field syntax on SQLite.

It uses:
cuc_id INTEGER NOT NULL AUTO_INCREMENT,

Database engine class will translate it to:
cuc_id INTEGER NOT NULL AUTOINCREMENT,

What SQLite expects is:
cuc_id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,

So we have this error:
Error: 1 near "AUTOINCREMENT": syntax error

See https://www.mediawiki.org/wiki/Manual:Database_access#SQLite_compatibility

Version: unspecified
Severity: major