ошибка со стилями при сборке портала mental1

ERROR in ./node_modules/css-loader?{"url":true,"sourceMap":true,"importLoaders":1}!./node_modules/postcss-loader/lib?{"sourceMap":true,"ident":"postcss","plugins":[null]}!./node_modules/resolve-url-loader?{"sourceMap":true,"root":"E://OSPanel//domains//portal//node_modules"}!./node_modules/sass-loader/lib/loader.js?{"precision":8,"outputStyle":"expanded","sourceMap":true}!./resources/assets/sass/app.scss
Module build failed:
@import "bootstrap/variables";

^
      File to import not found or unreadable: bootstrap/variables.
Parent style sheet: E:/OSPanel/domains/portal/node_modules/bootstrap-material-design/sass/_import-bs-sass.scss
      in E:\OSPanel\domains\portal\node_modules\bootstrap-material-design\sass\_import-bs-sass.scss (line 1, column 1)
 @ ./resources/assets/sass/app.scss 4:14-266
 @ multi ./resources/assets/js/app.js ./resources/assets/sass/app.scss

ERROR in ./resources/assets/sass/app.scss
Module build failed: ModuleBuildError: Module build failed:
@import "bootstrap/variables";

^
      File to import not found or unreadable: bootstrap/variables.
Parent style sheet: E:/OSPanel/domains/portal/node_modules/bootstrap-material-design/sass/_import-bs-sass.scss
      in E:\OSPanel\domains\portal\node_modules\bootstrap-material-design\sass\_import-bs-sass.scss (line 1, column 1)
    at runLoaders (E:\OSPanel\domains\portal\node_modules\webpack\lib\NormalModule.js:195:19)
    at E:\OSPanel\domains\portal\node_modules\loader-runner\lib\LoaderRunner.js:364:11
    at E:\OSPanel\domains\portal\node_modules\loader-runner\lib\LoaderRunner.js:230:18
    at context.callback (E:\OSPanel\domains\portal\node_modules\loader-runner\lib\LoaderRunner.js:111:13)
    at Object.asyncSassJobQueue.push [as callback] (E:\OSPanel\domains\portal\node_modules\sass-loader\lib\loader.js:55:13)
    at Object.<anonymous> (E:\OSPanel\domains\portal\node_modules\async\dist\async.js:2257:31)
    at Object.callback (E:\OSPanel\domains\portal\node_modules\async\dist\async.js:958:16)
    at options.error (E:\OSPanel\domains\portal\node_modules\node-sass\lib\index.js:294:32)
 @ ./resources/assets/sass/app.scss
 @ multi ./resources/assets/js/app.js ./resources/assets/sass/app.scss