climate_control | Climate Control can be used to temporarily assign | Continous Integration library

I'm trying to revive an old Rails application I worked on several years ago. I'm using ruby 2.3.3 and rails 3.2.15 on the Heroku-16 stack with ClearDB for my MySQL database with the mysql2 adapter. When deploying to Heroku it succeeds on the deploy but crashes when it tries to start the app.

Full stack trace from the Heroku log (updated after fixing activerecord-import gem version per suggestion in first answer):

I'm trying to push some modifications of my Ruby on Rails web to Heroku but it says "push rejected". The error comes after "Detecting rake tasks" and here's the message:

I cannot figure this out! Any help would be greatly appreciated.

Summary

After upgrading to Rails 5.2.3, my RSpec test fails but the app works fine in development.

The test failure states the asset, an image, is not in the pipeline. The problem is that the image is in the pipeline and the app displays the image correctly in development.

The app and RSpec tests work in previous versions of Rails (4.2 and 5.0)

Error

I am setting up a new site in Wix. The page uses an API to fill a simple 4 column table. Sizes, climate, prices, and reserve. I am. trying to figure out how to code a button into column 4 (all rows) that links to the Lightbox "reservation". The reserve button will not be linked to the API, just a form for a customer to fill in.

This is what I currently have. How can I add a button to the last column?

After upgrading the ruby version and the bundler version to my app I got error when pushing my app to heroku

My ruby version is ruby '2.4.0' My bundle is 2.0.2

I tried to find answer in stack overflow but without any luck! Can some one help me to fix it Precompiling assets failed. Push rejected, failed to compile Ruby app.

I postes this question because I didn't find any related answer on stackoverflow. I did everything. I will explain what I have tried. When I start the Rails server using rails s, I get the following output:

I updated my project to Rails 4.0, after updating some other gems that were outdated and conflicted (e.g. postgres_ext), I have run into another problem. I click on a link to edit a user and get this error:

Trying to update a project from Rails 3.2 to Rails 4.0. After updating some gems, I encountered some errors and deprecations, such as calling #scope with a hash when running 'rails s'. After fixing, 'rails s' works, but when I try to go to localhost to test my webapp, I get this error:

I'm creating a new rails app in order to use it for practicing adding a front-end theme to it and makes it work, so I created a new rails application (totally new app), after that I just edited the rails app gemfile to add all the gems I added for my older projects, after that I created a new heroku repo, and tried to push my new project to heroku, but It want work and it failed, here are my gemfile and my heroku logs knowing that I'm totally newbie

my gemfile