Sequel::Error method email= doesn't exist

[saadfarooq]

I'm getting this error after running barkeep on a Ubuntu container. I'm not sure what's causing this but seems like a dependency thing.

Sequel::Error
method email= doesn't exist
.../gems/sequel-3.36.1/lib/sequel/model/base.rb:1758:in `block in set_restricted'
.../gems/sequel-3.36.1/lib/sequel/model/base.rb:1745:in `each'
.../gems/sequel-3.36.1/lib/sequel/model/base.rb:1745:in `set_restricted'
.../gems/sequel-3.36.1/lib/sequel/model/base.rb:1256:in `set'
.../gems/sequel-3.36.1/lib/sequel/model/base.rb:1714:in `initialize_set'
.../gems/sequel-3.36.1/lib/sequel/model/base.rb:898:in `initialize'
/usr/src/app/barkeep_server.rb:255:in `new'
/usr/src/app/barkeep_server.rb:255:in `block in <class:BarkeepServer>'
.../gems/sinatra-1.3.2/lib/sinatra/base.rb:1212:in `call'
.../gems/sinatra-1.3.2/lib/sinatra/base.rb:1212:in `block in compile!'
.../gems/sinatra-1.3.2/lib/sinatra/base.rb:785:in `[]'
.../gems/sinatra-1.3.2/lib/sinatra/base.rb:785:in `block (3 levels) in route!'
.../gems/sinatra-1.3.2/lib/sinatra/base.rb:801:in `route_eval'
.../gems/sinatra-1.3.2/lib/sinatra/base.rb:785:in `block (2 levels) in route!'
.../gems/sinatra-1.3.2/lib/sinatra/base.rb:822:in `block in process_route'
.../gems/sinatra-1.3.2/lib/sinatra/base.rb:820:in `catch'
.../gems/sinatra-1.3.2/lib/sinatra/base.rb:820:in `process_route'
.../gems/sinatra-1.3.2/lib/sinatra/base.rb:784:in `block in route!'
.../gems/sinatra-1.3.2/lib/sinatra/base.rb:783:in `each'
.../gems/sinatra-1.3.2/lib/sinatra/base.rb:783:in `route!'
.../gems/sinatra-1.3.2/lib/sinatra/base.rb:886:in `dispatch!'
.../gems/sinatra-1.3.2/lib/sinatra/base.rb:719:in `block in call!'
.../gems/sinatra-1.3.2/lib/sinatra/base.rb:871:in `block in invoke'
.../gems/sinatra-1.3.2/lib/sinatra/base.rb:871:in `catch'
.../gems/sinatra-1.3.2/lib/sinatra/base.rb:871:in `invoke'
.../gems/sinatra-1.3.2/lib/sinatra/base.rb:719:in `call!'
.../gems/sinatra-1.3.2/lib/sinatra/base.rb:705:in `call'
.../gems/rack-protection-1.2.0/lib/rack/protection/xss_header.rb:22:in `call'
.../gems/rack-protection-1.2.0/lib/rack/protection/base.rb:47:in `call'
.../gems/rack-protection-1.2.0/lib/rack/protection/path_traversal.rb:16:in `call'
.../gems/rack-protection-1.2.0/lib/rack/protection/json_csrf.rb:17:in `call'
.../gems/rack-protection-1.2.0/lib/rack/protection/base.rb:47:in `call'
.../gems/rack-protection-1.2.0/lib/rack/protection/xss_header.rb:22:in `call'
.../gems/rack-1.4.1/lib/rack/session/abstract/id.rb:205:in `context'
.../gems/rack-1.4.1/lib/rack/session/abstract/id.rb:200:in `call'
.../gems/rack-1.4.1/lib/rack/logger.rb:15:in `call'
.../gems/rack-1.4.1/lib/rack/head.rb:9:in `call'
.../gems/sinatra-1.3.2/lib/sinatra/base.rb:1334:in `block in call'
.../gems/sinatra-1.3.2/lib/sinatra/base.rb:1416:in `synchrσonize'
.../gems/sinatra-1.3.2/lib/sinatra/base.rb:1334:in `call'
.../gems/rack-1.4.1/lib/rack/builder.rb:134:in `call'
.../gems/rack-1.4.1/lib/rack/urlmap.rb:64:in `block in call'
.../gems/rack-1.4.1/lib/rack/urlmap.rb:49:in `each'
.../gems/rack-1.4.1/lib/rack/urlmap.rb:49:in `call'
.../gems/rack-1.4.1/lib/rack/lint.rb:48:in `_call'
.../gems/rack-1.4.1/lib/rack/lint.rb:36:in `call'
.../gems/rack-1.4.1/lib/rack/showexceptions.rb:24:in `call'
.../gems/rack-1.4.1/lib/rack/commonlogger.rb:20:in `call'
.../gems/rack-1.4.1/lib/rack/chunked.rb:43:in `call'
.../gems/rack-1.4.1/lib/rack/content_length.rb:14:in `call'
.../gems/unicorn-4.2.1/lib/unicorn/http_server.rb:530:in `process_client'
.../gems/unicorn-4.2.1/lib/unicorn/http_server.rb:604:in `worker_loop'
.../gems/unicorn-4.2.1/lib/unicorn/http_server.rb:487:in `spawn_missing_workers'
.../gems/unicorn-4.2.1/lib/unicorn/http_server.rb:137:in `start'
.../gems/unicorn-4.2.1/bin/unicorn:121:in `<top (required)>'
.../bin/unicorn:16:in `load'
.../bin/unicorn:16:in `<main>'