[Rails] How to solve "Uglifier :: Error: Unexpected character'`'"

Development environment

・ Ruby: 2.5.7 Rails: 5.2.4 ・ Vagrant: 2.2.7 -VirtualBox: 6.1 ・ OS: macOS Catalina

Event

The following error occurs when deploying with Capistrano

Terminal


deploy:assets:precompile
 01 $HOME/.rbenv/bin/rbenv exec bundle exec rake assets:precompile
 01 rake aborted!
 01 Uglifier::Error: Unexpected character '`'

Cause

It was caused by the backticks (`) of the template literal that was written in the JavaScript file.

Solution

Comment out line 27 of production.rb.

production.rb


# config.assets.js_compressor = :uglifier

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