![ruby on rails 5 - undefined method `per' for #<Customer::ActiveRecord_Relation:0x007f6ef6d11b60> for rails_admin gem and will_paginate-bootstrap gem on admin panel - Stack Overflow ruby on rails 5 - undefined method `per' for #<Customer::ActiveRecord_Relation:0x007f6ef6d11b60> for rails_admin gem and will_paginate-bootstrap gem on admin panel - Stack Overflow](https://i.stack.imgur.com/mKoOp.png)
ruby on rails 5 - undefined method `per' for #<Customer::ActiveRecord_Relation:0x007f6ef6d11b60> for rails_admin gem and will_paginate-bootstrap gem on admin panel - Stack Overflow
![ruby - Rails API path in browser gives this error NoMethodError undefined method `[]' for nil:NilClass - Stack Overflow ruby - Rails API path in browser gives this error NoMethodError undefined method `[]' for nil:NilClass - Stack Overflow](https://i.stack.imgur.com/QpPNn.png)
ruby - Rails API path in browser gives this error NoMethodError undefined method `[]' for nil:NilClass - Stack Overflow
![NoMethodError: undefined method `[]' for nil:NilClass · Issue #51 · contribsys/faktory_worker_ruby · GitHub NoMethodError: undefined method `[]' for nil:NilClass · Issue #51 · contribsys/faktory_worker_ruby · GitHub](https://user-images.githubusercontent.com/68361/88164692-5f5fa900-cc0c-11ea-8976-bad7fef9e2c2.png)
NoMethodError: undefined method `[]' for nil:NilClass · Issue #51 · contribsys/faktory_worker_ruby · GitHub
Solidus dependancy on paperclip makes it incompatible with ruby 3.0 · Issue #3993 · solidusio/solidus · GitHub
![Updating a category topic fails with the message «NoMethodError (undefined method `inner_html' for nil:NilClass)» when the topic's contents starts with a GitHub onebox - bug - Discourse Meta Updating a category topic fails with the message «NoMethodError (undefined method `inner_html' for nil:NilClass)» when the topic's contents starts with a GitHub onebox - bug - Discourse Meta](https://d11a6trkgmumsb.cloudfront.net/original/3X/5/b/5bf45c5936c71a4dbfa67980d34ec65622ad0e08.png)
Updating a category topic fails with the message «NoMethodError (undefined method `inner_html' for nil:NilClass)» when the topic's contents starts with a GitHub onebox - bug - Discourse Meta
![undefined method `mechanism=' for ActiveSupport::Dependencies:Moduleを解決した話。(Mac rails consoleが起動できない編) - Qiita undefined method `mechanism=' for ActiveSupport::Dependencies:Moduleを解決した話。(Mac rails consoleが起動できない編) - Qiita](https://qiita-user-contents.imgix.net/https%3A%2F%2Fcdn.qiita.com%2Fassets%2Fpublic%2Farticle-ogp-background-9f5428127621718a910c8b63951390ad.png?ixlib=rb-4.0.0&w=1200&mark64=aHR0cHM6Ly9xaWl0YS11c2VyLWNvbnRlbnRzLmltZ2l4Lm5ldC9-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&mark-x=142&mark-y=112&blend64=aHR0cHM6Ly9xaWl0YS11c2VyLWNvbnRlbnRzLmltZ2l4Lm5ldC9-dGV4dD9peGxpYj1yYi00LjAuMCZ3PTYxNiZ0eHQ9JTQwdmF6YV9fdGEmdHh0LWNvbG9yPSUyMzIxMjEyMSZ0eHQtZm9udD1IaXJhZ2lubyUyMFNhbnMlMjBXNiZ0eHQtc2l6ZT0zNiZ0eHQtYWxpZ249bGVmdCUyQ3RvcCZzPWM1MTExYzY1ZGExYzA5NWY5YjNhNDQ2ZDE1N2Y2MjQy&blend-x=142&blend-y=491&blend-mode=normal&s=008d520977723e2aa0009732313c0922)