herokuでデプロイ完了後に謎のエラー

昨日までサイト閲覧できていましたが、本日になってこの謎のエラーに直面しました。
https://gyazo.com/6cdbf2684086eaa09c313a3118738367
言われてる通り、logを見にいきます

-----> Ruby app detected
-----> Installing bundler 2.0.2
-----> Removing BUNDLED WITH version in the Gemfile.lock
-----> Compiling Ruby/Rails
-----> Using Ruby version: ruby-2.5.1
-----> Installing dependencies using bundler 2.0.2
       Running: bundle install --without development:test --path vendor/bundle --binstubs vendor/bundle/bin -j4 --deployment
       The dependency tzinfo-data (>= 0) will be unused by any of the platforms Bundler is installing for. Bundler is installing for ruby but the dependency is only for x86-mingw32, x86-mswin32, x64-mingw32, java. To add those platforms to the bundle, run `bundle lock --add-platform x86-mingw32 x86-mswin32 x64-mingw32 java`.
       Using rake 13.0.1
       Using concurrent-ruby 1.1.6
       Using i18n 1.8.2
       Using minitest 5.14.0
       Using thread_safe 0.3.6
       Using tzinfo 1.2.7
       Using activesupport 5.2.4.2
       Using builder 3.2.4
       Using erubi 1.9.0
       Using mini_portile2 2.4.0
       Using nokogiri 1.10.9
       Using rails-dom-testing 2.0.3
       Using crass 1.0.6
       Using loofah 2.5.0
       Using rails-html-sanitizer 1.3.0
       Using actionview 5.2.4.2
       Using rack 2.2.2
       Using rack-test 1.1.0
       Using actionpack 5.2.4.2
       Using nio4r 2.5.2
       Using websocket-extensions 0.1.4
       Using websocket-driver 0.7.1
       Using actioncable 5.2.4.2
       Using globalid 0.4.2
       Using activejob 5.2.4.2
       Using mini_mime 1.0.2
       Using mail 2.7.1
       Using actionmailer 5.2.4.2
       Using activemodel 5.2.4.2
       Using arel 9.0.0
       Using activerecord 5.2.4.2
       Using mimemagic 0.3.4
       Using marcel 0.3.3
       Using activestorage 5.2.4.2
       Using public_suffix 4.0.4
       Using addressable 2.7.0
       Using bcrypt 3.1.13
       Using msgpack 1.3.3
       Using bootsnap 1.4.6
       Using bundler 2.0.2
       Using mini_magick 4.10.1
       Using ffi 1.12.2
       Using ruby-vips 2.0.17
       Using image_processing 1.10.3
       Using carrierwave 2.1.0
       Using chunky_png 1.3.11
       Using coderay 1.1.2
       Using coffee-script-source 1.12.2
       Using execjs 2.7.0
       Using coffee-script 2.4.1
       Using method_source 1.0.0
       Using thor 1.0.1
       Using railties 5.2.4.2
       Using coffee-rails 4.2.2
       Using multi_json 1.14.1
       Using sass 3.4.25
       Using compass-core 1.0.3
       Using compass-import-once 1.0.5
       Using rb-fsevent 0.10.4
       Using rb-inotify 0.10.1
       Using compass 1.0.3
       Using sprockets 3.7.2
       Using sprockets-rails 3.2.1
       Using tilt 2.0.10
       Using sass-rails 5.0.7
       Using compass-rails 3.1.0
       Using orm_adapter 0.5.0
       Using responders 3.0.0
       Using warden 1.2.8
       Using devise 4.7.1
       Using erubis 2.7.0
       Using sassc 2.3.0
       Using font-awesome-sass 5.12.0
       Using temple 0.8.2
       Using haml 5.1.2
       Using sexp_processor 4.14.1
       Using ruby_parser 3.14.2
       Using html2haml 2.2.0
       Using haml-rails 2.0.1
       Using jbuilder 2.10.0
       Using jquery-rails 4.3.5
       Using kaminari-core 1.2.0
       Using kaminari-actionview 1.2.0
       Using kaminari-activerecord 1.2.0
       Using kaminari 1.2.0
       Using mysql2 0.5.3
       Using pg 1.2.3
       Using pry 0.13.1
       Using pry-rails 0.3.9
       Using puma 3.12.4
       Using rails 5.2.4.2
       Using remotipart 1.4.4
       Using turbolinks-source 5.2.0
       Using turbolinks 5.2.1
       Using uglifier 4.2.0
       Bundle complete! 30 Gemfile dependencies, 95 gems now installed.
       Gems in the groups development and test were not installed.
       Bundled gems are installed into `./vendor/bundle`
       Bundle completed (1.41s)
       Cleaning up the bundler cache.
-----> Installing node-v10.15.3-linux-x64
-----> Detecting rake tasks
-----> Preparing app for Rails asset pipeline
       Running: rake assets:precompile
       Yarn executable was not detected in the system.
       Download Yarn at https://yarnpkg.com/en/docs/install
       Asset precompilation completed (2.33s)
       Cleaning assets
       Running: rake assets:clean
-----> Detecting rails configuration
###### WARNING:
       You set your `config.assets.compile = true` in production.
       This can negatively impact the performance of your application.
       
       For more information can be found in this article:
         https://devcenter.heroku.com/articles/rails-asset-pipeline#compile-set-to-true-in-production
       
###### WARNING:
       You set your `config.active_storage.service` to :local in production.
       If you are uploading files to this app, they will not persist after the app
       is restarted, on one-off dynos, or if the app has multiple dynos.
       Heroku applications have an ephemeral file system. To
       persist uploaded files, please use a service such as S3 and update your Rails
       configuration.
       
       For more information can be found in this article:
         https://devcenter.heroku.com/articles/active-storage-on-heroku
       
###### WARNING:
       We detected that some binary dependencies required to
       use all the preview features of Active Storage are not
       present on this system.
       
       For more information please see:
         https://devcenter.heroku.com/articles/active-storage-on-heroku
       
###### WARNING:
       There is a more recent Ruby version available for you to use:
       
       2.5.8
       
       The latest version will include security and bug fixes, we always recommend
       running the latest version of your minor release.
       
       Please upgrade your Ruby version.
       
       For all available Ruby versions see:
         https://devcenter.heroku.com/articles/ruby-support#supported-runtimes
###### WARNING:
       No Procfile detected, using the default web server.
       We recommend explicitly declaring how to boot your server process via a Procfile.
       https://devcenter.heroku.com/articles/ruby-default-web-server
-----> Discovering process types
       Procfile declares types     -> (none)
       Default types for buildpack -> console, rake, web
-----> Compressing...
       Done: 64.7M
-----> Launching...
       Released v7
       https://-------.herokuapp.com/ deployed to Heroku