ROR Project Version upgrade problem

Job ID: 33294222

Budget: $250 – $750 USD

Hello Everybody I have some problem in the upgrading project.
I want to update rails verson from 4.2 to 6.1.5.
But there are many issues in this here.
Who can do this?
I attached gem file. So please check this file and let me know about that.
Related categories: PHP JavaScript Ruby on Rails Ruby Git