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SQLite error code

SQLITE_IOERR_CHECKRESERVEDLOCK

SQLITE_IOERR_CHECKRESERVEDLOCK is SQLite result code 3594, an extended code of SQLITE_IOERR.

Result code3594
NameSQLITE_IOERR_CHECKRESERVEDLOCK
Primary codeSQLITE_IOERR

What it means

The SQLITE_IOERR_CHECKRESERVEDLOCK error code is an extended error code for SQLITE_IOERR indicating an I/O error within the xCheckReservedLock method on the sqlite3_io_methods object.

Source: SQLite Result and Error Codes