CSS, JS doesn't work net::ERR_CONNECTION_CLOSED

GET https://localhost:8000/frontend/web/css/bootstrap.css net::ERR_CONNECTION_CLOSED
localhost/:18 GET https://localhost:8000/frontend/web/css/swiper.min.css net::ERR_CONNECTION_CLOSED
localhost/:19 GET https://localhost:8000/frontend/web/css/style.css net::ERR_CONNECTION_CLOSED
localhost/:20 GET https://localhost:8000/frontend/web/css/font/iconfont.css net::ERR_CONNECTION_CLOSED
localhost/:27 GET https://localhost:8000/frontend/web/js/jquery.min.js net::ERR_CONNECTION_CLOSED
localhost/:523 GET https://localhost:8000/frontend/web/js/i18n-zh-TW.js net::ERR_CONNECTION_CLOSED
localhost/:524 GET https://localhost:8000/frontend/web/js/frontend.js net::ERR_CONNECTION_CLOSED
localhost/:525 GET https://localhost:8000/frontend/web/js/swiper.min.js net::ERR_CONNECTION_CLOSED
localhost/:526 GET https://localhost:8000/frontend/web/js/comm.js net::ERR_CONNECTION_CLOSED
localhost/:164 GET https://localhost:8000/uploads/96941541407359remfyllogo_.png net::ERR_CONNECTION_CLOSED
caroisel.min.js:6 Uncaught TypeError: Cannot read properties of undefined (reading ‘fn’)
at caroisel.min.js:6:20789
at caroisel.min.js:6:21394
(anonymous) @ caroisel.min.js:6
(anonymous) @ caroisel.min.js:6
yii.js:520 Uncaught TypeError: window.jQuery is not a function
at yii.js:520:8
(anonymous) @ yii.js:520
yii.validation.js:447 Uncaught ReferenceError: jQuery