Symbol lookup error

[Allan Farrell]

Hi,

I'm running a Rails 6.0.2.2 app using the default Rails Puma web server on my local development machine (Ubuntu 20.04) and I'm getting the following Nokogiri error:

symbol lookup error: /home/allan/dev/rails/gard/vendor/ruby/2.7.0/gems/nokogiri-1.10.10/lib/nokogiri/nokogiri.so: undefined symbol: st_init_numtable_with_size

I'm using Nokogiri gem 1.10.10

This error crashes the web server and it  occurs when a bad request (404) hits the web server. 

The error also occurs during testing. 

Thanks for any help you can provide! 

Allan