What's the correct way to read several SQL statements?

[MonadMania]

I have a database dump in "some-file.sql". It's about 1000 lines of proper SQL written for SQLite. Here's how I'm processing this file:

;;; Execute each SQL statement in sequence. (defun sql-statements (db sql-stream) "Execute SQL statements from the stream SQL-STREAM." (do* ((next-char (read-char sql-stream nil :eof) (read-char sql-stream nil :eof)) (next-statement (make-array 1000 :element-type 'character :initial-element (code-char 0) :fill-pointer 0 :adjustable t))) ((eql :eof next-char) next-statement) (if (eql #\; next-char) (progn (sqlite:execute-non-query db next-statement) (print next-statement) (setf (fill-pointer next-statement) 0)) (vector-push-extend next-char next-statement))))

Here's how I'm invoking the above function:
;;; The SQL file is a dump, so it establishes a transaction. I don't do so here. (sqlite:with-open-database (db *db-path*) (with-open-file (sql-stream *sql-path*) (sql-statements db sql-stream)))

This works fine until statement 17, where I get an error in SQLITE.CACHE:POP-FROM-CACHE:

The value
NIL
is not of type
VECTOR
[Condition of type TYPE-ERROR]

Restarts:
0: [RETRY] Retry SLIME REPL evaluation request.
1: [*ABORT] Return to SLIME's top level.
2: [ABORT] abort thread (#<THREAD "repl-thread" RUNNING {10040D8473}>)

Backtrace:
0: (SQLITE.CACHE::POP-FROM-CACHE #<SQLITE.CACHE:MRU-CACHE {1004ADE133}>)
Locals:
CACHE = #<SQLITE.CACHE:MRU-CACHE {1004ADE133}>
1: (SQLITE.CACHE:PUT-TO-CACHE #<SQLITE.CACHE:MRU-CACHE {1004ADE133}> "
..)
Locals:
CACHE = #<SQLITE.CACHE:MRU-CACHE {1004ADE133}>
ID = "\r\nINSERT INTO "episodes" VALUES(14, 2, 'The Statue')"
OBJECT = #<SQLITE:SQLITE-STATEMENT {1004AEB313}>
2: ((FLET "CLEANUP-FUN-4" :IN SQLITE:EXECUTE-NON-QUERY)) [cleanup]
[No Locals]
3: (SQLITE:EXECUTE-NON-QUERY #<SQLITE:SQLITE-HANDLE {1004ADDFC3}> "
..)
4: (SQLITE:EXECUTE-NON-QUERY #<SQLITE:SQLITE-HANDLE {1004ADDFC3}> "
..) [more]
5: (SQL-STATEMENTS #<SQLITE:SQLITE-HANDLE {1004ADDFC3}> #<SB-SYS:FD-STREAM for "file f:\portacle\projects\sqlite\data\foods.sql" {1004ADF6C3}>)
6: ((LAMBDA ()))
7: (SB-INT:SIMPLE-EVAL-IN-LEXENV (SQLITE:WITH-OPEN-DATABASE (DB DB-PATH) (WITH-OPEN-FILE (SQL-STREAM SQL-PATH) (SQL-STATEMENTS DB SQL-STREAM))) #)
8: (EVAL (SQLITE:WITH-OPEN-DATABASE (DB DB-PATH) (WITH-OPEN-FILE (SQL-STREAM SQL-PATH) (SQL-STATEMENTS DB SQL-STREAM))))

Since the cache has size 16 and the error occurs on statement 17, I assume that I'm bumping into the cache size. What's the correct way to execute a batch of SQL statements stored in a text file? I'm running SBCL on Windows 10.