Bug: importing database in .sql causes pgdesigner to crash

[kukymbr]

Environment

pgdesigner: v0.0.3
macOS 15.5
Google Chrome 147.0.7727.103

Steps to reproduce

1. Generate .sql database file via the pgdesigner or use any .sql with database DDLs (including given in demo, e.g. airlines.sql).
2. Run the pgdesigner or pgdesigner -app.
3. Import given .sql file.

Expected result

Database is imported to the pgdesigner editor.

Actual behaviour

1. UI shows an error: Open failed: API Connection Error
2. App's backend is killed:

   pgdesigner -app
   PgDesigner serving (demo) at http://127.0.0.1:52937
   RPC: http://127.0.0.1:52937/rpc/  SMDBox: http://127.0.0.1:52937/rpc/doc/
   Press Ctrl+C to stop (auto-exits when browser window closes)
   zsh: killed     pgdesigner -app