Error is triggered when reading the barcode on the balance receipt

Uncaught NetworkError: Failed to execute 'send' on 'XMLHttpRequest': Failed to load 'http://localhost:8000/balancebc/990891300004/'.

http://51.178.139.43:8069/web/content/6709-303a5b8/point_of_sale.assets.js:579

Tracing:

Tracing:

Error: Failed to execute 'send' on 'XMLHttpRequest': Failed to load 'http://localhost:8000/balancebc/990891300004/'.

at Class.barcode_ticket_balance_action (http://51.178.139.43:8069/web/content/6709-303a5b8/point_of_sale.assets.js:579:984)

at Class.scan (http://51.178.139.43:8069/web/content/6709-303a5b8/point_of_sale.assets.js:299:144)

at Class. (http://51.178.139.43:8069/web/content/6709-303a5b8/point_of_sale.assets.js:297:464)

at Class.trigger (http://51.178.139.43:8069/web/content/1316-0215165/web.assets_common.js:3943:180)

at Class.trigger (http://51.178.139.43:8069/web/content/1316-0215165/web.assets_common.js:3949:148)

at Class.handle_buffered_keys (http://51.178.139.43:8069/web/content/6276-d4f02a8/point_of_sale.pos_assets_backend.js:3562:1372)

at Class.handler (http://51.178.139.43:8069/web/content/6276-d4f02a8/point_of_sale.pos_assets_backend.js:3569:173)

at HTMLBodyElement.dispatch (http://51.178.139.43:8069/web/content/1316-0215165/web.assets_common.js:1024:447)

at HTMLBodyElement.elemData.handle (http://51.178.139.43:8069/web/content/1316-0215165/web.assets_common.js:1010:166)