Error map
Bundler could not find compatible versions for gem Bundler: Bundler could not find compatible versions for gem "activesupport": In Gemfile: rails (= 7.1.0) depends on activesupport (= 7.1.0)
Ruby / Rails · layer 4, Application & API
Centre: this error. First ring: errors it is linked with (12). Outer ring: what those are linked with. Colours show the layer of a request each error belongs to. Click any dot to re-centre the map on it; hover to follow its connections. The centre dot opens the error page.
Directly related (12)
Unmet dependencies / E: Unable to correct problems, you have held broken packages
apt can’t find a set of package versions that satisfies all dependencies — usually mixed repositories or a package from another r…
FactoryBot: FactoryBot::DuplicateDefinitionError: Factory already registered: user
Two factory definitions use the same name (or files are loaded twice).
Ruby: FrozenError: can't modify frozen String: "abc"
You tried to change an object that's frozen — string literals under `# frozen_string_literal: true`, constants, symbols or frozen…
Ruby: LoadError: cannot load such file -- nokogiri (or: cannot load such file -- bundler/setup)
`require` couldn't find the file/gem — it isn't installed, not in the Gemfile, or the load path is wrong.
Rake: rake aborted! Don't know how to build task 'db:migrat' (See the list of available tasks with `rake --tasks`)
Rake doesn't know the task name — a typo, a missing Rakefile, or a gem/engine not loaded.
Ruby: OpenSSL::SSL::SSLError: SSL_connect returned=1 errno=0 state=error: certificate verify failed (unable to get local issuer certificate)
Ruby's HTTP client (Net::HTTP, Faraday, gem install) couldn't verify the server's certificate.
Ruby: ArgumentError: wrong number of arguments (given 1, expected 2..3)
A method was called with more or fewer arguments than it accepts.
Ruby: ArgumentError: missing keyword: :name / unknown keyword: :nmae
A method requiring keyword arguments was called without them, or with a misspelt keyword.
Ruby: TypeError: no implicit conversion of nil into String
A String method (`+`, `File.join`, `Array#join` usage) received `nil` instead of a string.
Ruby: TypeError: nil can't be coerced into Integer / String can't be coerced into Integer
Arithmetic combined a number with `nil` (or a String) which Ruby can't convert automatically.
Bundler: Could not find gem 'rails (~> 7.1)' in locally installed gems / Could not find rails-7.1.0 in any of the gem sources listed in your Gemfile
A gem from the Gemfile/Gemfile.lock isn't installed (or isn't available at that version).
Ruby: ERROR: Failed to build gem native extension. current directory: /gems/pg-1.5.4/ext/pg — An error occurred while installing pg
A gem with C code couldn't compile, usually because a system library or header is missing.
Two steps away (16)
npm ERR! code ERESOLVE — unable to resolve dependency tree
npm 7+ found conflicting peer dependency requirements and refuses to install a broken tree.
Error: Cannot find module 'x' (MODULE_NOT_FOUND)
Node can’t resolve the module path — the package isn’t installed, or a relative path/extension is wrong.
Gradle: Could not resolve all files for configuration / Could not resolve dependency
Gradle couldn’t download a dependency — wrong coordinates/version, missing repository, offline mode, or network/proxy issues.
Rails: ActiveRecord::RecordInvalid: Validation failed: Email can't be blank, Name is too short
`save!`/`create!`/`update!` raised because validations failed.
RSpec: expected: 200 got: 404 (compared using ==) — RSpec::Expectations::ExpectationNotMetError
An RSpec `expect` assertion didn't hold: the actual value differs from what the test expected.
Ruby: NameError: undefined local variable or method 'x' for main:Object
Ruby saw a bare identifier that is neither a local variable nor a method on the current object.
Ruby: NameError: uninitialized constant UsersController::User (Did you mean? Users)
Ruby (or Rails autoloading) couldn't find a class or module with that name in the current scope.
Bundler: Your bundle only supports platforms ["x86_64-linux"] but your local platform is arm64-darwin / Could not find gem 'nokogiri (1.16.0-arm64-darwin)'
The lockfile has no Nokogiri build for the current platform (precompiled "native" gems are per platform).
Bundler: Your Ruby version is 3.1.2, but your Gemfile specified 3.3.0
`.ruby-version`/the Gemfile `ruby` line requires a different Ruby than the one running.
OpenSSL: error:num=20:unable to get local issuer certificate / SSL: CERTIFICATE_VERIFY_FAILED
The client could not build a chain from the server's certificate to a CA it trusts — the issuer is missing locally or the server…
curl: (60) SSL certificate problem: unable to get local issuer certificate
curl could not verify the server's certificate — missing CA, incomplete chain, self-signed or expired certificate.
SSL Labs: Chain issues: Incomplete — Extra download (intermediate certificate missing)
The server sends only its own certificate and not the intermediate CA(s), so some clients cannot build a trusted chain.
Ruby: NoMethodError: undefined method `x' for nil (nil:NilClass)
You called a method on nil — the object you expected (a record, hash value, param) wasn’t there.
macOS: ERROR: While executing gem ... (Gem::FilePermissionError) You don't have write permissions for the /Library/Ruby/Gems/2.6.0 directory
`gem install` tries to write into Apple's system Ruby, which is protected and shouldn't be modified.
Rails: ActionController::ParameterMissing: param is missing or the value is empty: user
`params.require(:user)` found no `user` key (or it was blank), so Rails responds 400.
macOS: ld: library 'ssl' not found / ld: library not found for -lssl (clang: error: linker command failed)
The linker can't find OpenSSL (or another library) because Homebrew libraries aren't on its search path.
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