railsでbxsliderが使えない

分からないこと

railsでbxsliderを使いたいのだが、

Uncaught TypeError: $(...).bxSlider is not a function

が出る。

試したこと

https://github.com/manfe/bxslider-rails
を参考に、gemfileにgem 'bxslider-rails'を入れて、

applicationjs
1//= require jquery
2//= require rails-ujs
3//= require popper
4//= require bootstrap-sprockets
5//= require activestorage
6//= require popper
7//= require turbolinks
8//= require bxslider
9//= require_tree .

applicationscss
1@import "bxslider";

bxsliderjs
1$(document).ready(function(){
2  $('.slider').bxSlider();
3});

を行なった。

開発環境は、

ruby 2.4.1
rails 5.2.2

です。よろしくお願いします。

追記

ソースを表示の結果

<head>
・
・
・
<script src="/assets/turbolinks.self-569ee74eaa15c1e2019317ff770b8769b1ec033a0f572a485f64c82ddc8f989e.js?body=1" data-turbolinks-track="reload"></script>
<script src="/assets/jquery.bxslider.self-378be78e3ae2ebfc909b86a0b3aea51858c2a394b967a6abafacb3d1fabeb8fd.js?body=1" data-turbolinks-track="reload"></script>
<script src="/assets/jquery.easing.1.3.self-c85028b4485f3b7e91508aa9891cfeb41a8884efd87672715de3fa1ae2173948.js?body=1" data-turbolinks-track="reload"></script>
<script src="/assets/jquery.fitvids.self-0caa1c3cf6099ad75621d7021e543202502128d712d830ae831528e2a7460237.js?body=1" data-turbolinks-track="reload"></script>
<script src="/assets/bxslider.self-6a3cf5192354f71615ac51034b3e97c20eda99643fcaf5bbe6d41ad59bd12167.js?body=1" data-turbolinks-track="reload"></script>
<script src="/assets/jquery3.self-5af507e253c37e9c9dcf65064fc3f93795e6e28012780579975a4d709f4074ad.js?body=1" data-turbolinks-track="reload"></script>
<script src="/assets/jquery-ui/version.self-c8e3d1203da26ea7efdf83c1eabb3f0ba55cb68e463f5ccf0d77bd15ce6a8e61.js?body=1" data-turbolinks-track="reload"></script>
<script src="/assets/jquery-ui/keycode.self-ad63cd20acf49dd333bbbc537454d7d475bd610eb5b88de0dca009f0c3d314b1.js?body=1" data-turbolinks-track="reload"></script>
<script src="/assets/jquery-ui/widgets/datepicker.self-2af0dec09da99d687c31fc224e940687a4eb3694e7b38b0871bba475cad86120.js?body=1" data-turbolinks-track="reload"></script>
<script src="/assets/jquery-ui/widget.self-fca20bcec06d192f97cffa6e734e24360e227237b8ae7d7e7e60754df7d5444f.js?body=1" data-turbolinks-track="reload"></script>
<script src="/assets/jquery-ui/widgets/controlgroup.self-0b7409f97114a33de116bd5429e9df199cbdea3f276d8bd725c4c2c60f244711.js?body=1" data-turbolinks-track="reload"></script>
<script src="/assets/jquery-ui/widgets/checkboxradio.self-0b7409f97114a33de116bd5429e9df199cbdea3f276d8bd725c4c2c60f244711.js?body=1" data-turbolinks-track="reload"></script>
<script src="/assets/jquery-ui/widgets/button.self-659b51f6fb5303f90ed8cf551509063770a50168a15795ba834b08f8bf2e0ce0.js?body=1" data-turbolinks-track="reload"></script>
<script src="/assets/jquery-ui/ie.self-163eb039dcb1e0c3471b7d91386eabb8753da6906e84824c019f9ff56bdb83a6.js?body=1" data-turbolinks-track="reload"></script>
<script src="/assets/jquery-ui/widgets/mouse.self-f0790a202dcf54fab051e71b042335d5346f9cceb0f645223c1dab93f349a04b.js?body=1" data-turbolinks-track="reload"></script>
<script src="/assets/jquery-ui/data.self-2067c82e6fe39a9cba5623206a5dc28d5c60d26b95cd100855b78cacf72865b8.js?body=1" data-turbolinks-track="reload"></script>
<script src="/assets/jquery-ui/plugin.self-d8f576c8e073ca51f095505f47bd09d306b875404cd90afcbb6338287cfb0247.js?body=1" data-turbolinks-track="reload"></script>
<script src="/assets/jquery-ui/safe-active-element.self-a1f1a1a7dae3269ce03f6fffb2dcc9b4a7490f5d546c65d54417bec3be24b668.js?body=1" data-turbolinks-track="reload"></script>
<script src="/assets/jquery-ui/safe-blur.self-2cc24c46132d51c7724f6371154241b0a81c9bae5d5681d8f62b01ce46236726.js?body=1" data-turbolinks-track="reload"></script>
<script src="/assets/jquery-ui/scroll-parent.self-38e26a71a450a29fb63425e8f589a7046862f927eb0a1dbf6a6c44da05196d2e.js?body=1" data-turbolinks-track="reload"></script>
<script src="/assets/jquery-ui/widgets/draggable.self-42c3eda0b49f105628cea7580fe38c7ed77467cee384bb2c4e095a2bd0a172e6.js?body=1" data-turbolinks-track="reload"></script>
<script src="/assets/jquery-ui/disable-selection.self-5675f71f2fbbc6857ea700ba843af748b50dbc0150cc87932a7d05ec016bb659.js?body=1" data-turbolinks-track="reload"></script>
<script src="/assets/jquery-ui/widgets/resizable.self-1a46c2f5b876918e02bf979080e56f57846590cd880721bca5058e84f7f60bae.js?body=1" data-turbolinks-track="reload"></script>
<script src="/assets/jquery-ui/focusable.self-426e99e67d1f1bd4cb444fd878ee63a6de1f5d1d61451e43022c86214b9eec64.js?body=1" data-turbolinks-track="reload"></script>
<script src="/assets/jquery-ui/position.self-1b49c8c521e67a4a88bfdad6b4d944d33686d25009a0e40a1e170acdd7b6962a.js?body=1" data-turbolinks-track="reload"></script>
<script src="/assets/jquery-ui/tabbable.self-f3f62ceed772d3a325cebd6a03221f8a8cb02c6150f4feba738c6525a2953690.js?body=1" data-turbolinks-track="reload"></script>
<script src="/assets/jquery-ui/unique-id.self-66e85ac85cd0b6b8b1bb89369fc65f608f716869dc0930862a8d421a57a9580a.js?body=1" data-turbolinks-track="reload"></script>
<script src="/assets/jquery-ui/widgets/dialog.self-2bd687f9580c0be4213c50b4bb1211c28ceedb045eba954e63d40bfbb4d1affd.js?body=1" data-turbolinks-track="reload"></script>
<script src="/assets/jquery-ui/widgets/sortable.self-6e5e1f07a29b5a89ec1d359363d2800904e3ae548a38ab2f8eded36746d1adbe.js?body=1" data-turbolinks-track="reload"></script>
<script src="/assets/jquery-ui/escape-selector.self-43e4d61501e4ffb1ecba387affbae1eb3e1c863ab0b0e71897851cddd246e50e.js?body=1" data-turbolinks-track="reload"></script>
<script src="/assets/jquery-ui/widgets/tabs.self-b7f60535e992224ca66c3f11dc943eba9ef42a9605241e27b9dba24c7efb287e.js?body=1" data-turbolinks-track="reload"></script>
<script src="/assets/jquery_ujs.self-784a997f6726036b1993eb2217c9cb558e1cbb801c6da88105588c56f13b466a.js?body=1" data-turbolinks-track="reload"></script>

</head>