I think this gem is very old need to update

[vishalsingh123]

Bundler could not find compatible versions for gem "faraday":
In snapshot (Gemfile.lock):
faraday (= 1.0.1)

In Gemfile:
google-cloud-storage was resolved to 1.26.2, which depends on
googleauth (~> 0.9) was resolved to 0.12.0, which depends on
faraday (>= 0.17.3, < 2.0)

instamojo-ruby was resolved to 1.1.2, which depends on
  faraday (= 0.8.8)

Running bundle update will rebuild your snapshot from scratch, using only
the gems in your Gemfile, which may resolve the conflict.

[Harsh-2909]

This gem is very old. It does not even support Instamojo v2 APIs. It's better to develop your own implementation of Instamojo v2 API wrapper than using this.