' > > ``` 根据我对堆栈跟踪的解读，我怀疑该问题是由以下 PR 升级 Rack gem 所导致的： > > > Bumps \[rack\](https://github.com/rack/rack) from 2.0.8 to 2.1.1. > \ > \Changelog\ > \\Sourced from \rack's changelog\.\\ > \ > \\[2.1.1\] - 2020-01-12\ > \ > \Remove \Rack::Chunked\ from \Rack::Server\ default middleware. (\#1475\, \@ioquatix\)\ > \ > \\[2.1.0\] - 2020-01-10\ > \Added\ > \ > \Add support for \SameSite=None\ cookie value. (\@hennikul\)\ > \Add trailer headers. (\@eileencodes\)\ > \Add MIME Types for video streaming. (\@styd\)\ > \Add MIME Type for WASM. (\@buildrtech\)\ > \Add \Early Hints(103)\ to status codes. (\@egtra\)\ > \Add \Too Early(425)\ to status codes. (\@y-yagi\)\ > \Add \Bandwidth Limit Exceeded(509)\ to status codes. (\@CJKinni\)\ > \Add method for custom \ip\_filter\. (\@svcastaneda\)\ > \Add boot-time profiling capabilities to \rackup\. (\@tenderlove\)\ > \Add multi mapping support for \X-Accel-Mappings\ header. (\@yoshuki\)\ > \Add \sync: false\ option to \Rack::Deflater\. (Eric Wong)\ > \Add \Builder#freeze\_app\ to freeze application and all middleware instances. (\@jeremyevans\)\ > \Add API to extract cookies from \Rack::MockResponse\. (\@petercline\)\ > \ > \Changed\ > \ > \Don't propagate nil values from middleware. (\@ioquatix\)\ > \Lazily initialize the response body and only buffer it if required. (\@ioquatix\)\ > \Fix deflater zlib buffer errors on empty body part. (\@felixbuenemann\)\ > \Set \X-Accel-Redirect\ to percent-encoded path. (\@diskkid\)\ > \Remove unnecessary buffer growing when parsing multipart. (\@tainoe\)\ > \Expand the root path in \Rack::Static\ upon initialization. (\@rosenfeld\)\ > \Make \ShowExceptions\ work with binary data. (\@axyjo\)\ > \Use buffer string when parsing multipart requests. (\@janko-m\)\ > \Support optional UTF-8 Byte Order Mark (BOM) in config.ru. (\@mikegee\)\ > \Handle \X-Forwarded-For\ with optional port. (\@dpritchett\)\ > \Use \Time#httpdate\ format for Expires, as proposed by RFC 7231. (\@nanaya\)\ > \Make \Utils.status\_code\ raise an error when the status symbol is invalid instead of \500\. (\@adambutler\)\ > \Rename \Request::SCHEME\_WHITELIST\ to \Request::ALLOWED\_SCHEMES\.\ > \Make \Multipart::Parser.get\_filename\ accept files with \+\ in their name. (\@lucaskanashiro\)\ > \Add Falcon to the default handler fallbacks. (\@ioquatix\)\ > \Update codebase to avoid string mutations in preparation for \frozen\_string\_literals\. (\@pat\)\ > \Change \MockRequest#env\_for\ to rely on the input optionally responding to \#size\ instead of \#length\. (\@janko\)\ > \Rename \Rack::File\ -> \Rack::Files\ and add deprecation notice. (\@postmodern\).\ > \Prefer Base64 “strict encoding” for Base64 cookies. (\@ioquatix\)\ > \ > \Removed\ > \ > \Remove \to\_ary\ from Response (\@tenderlove\)\ > \Deprecate \Rack::Session::Memcache\ in favor of \Rack::Session::Dalli\ from dalli gem (\@fatkodima\)\ > \ > \Fixed\ > \\ ... (truncated) > \ > \ > \ > \Commits\ > \ > \\\799a520\\ Updating changelog for 2-1-stable\ > \\\4fabf4d\\ Bump version.\ > \\\10512e6\\ Remove chunked middleware from default server stack.\ > \\\db92251\\ Fix ActiveStorage use-case and add test case. Fixes \#1464\.\ > \\\327a865\\ Do not deprecate Rack::File\ > \\\04f541b\\ Merge pull request \#1462\ from jeremyevans/sessionid-to\_s\ > \\\879ae71\\ Merge pull request \#1461\ from p8/cleanup-changelog\ > \\\acf7d44\\ Remove changes from CHANGELOG already present in older versions \[ci skip\]\ > \\\7d14bac\\ Merge pull request \#1162\ from snood1205/master\ > \\\2b61454\\ Merge pull request \#1459\ from jimeh/add-breaking-change-warning-to-changelog\ > \Additional commits viewable in \compare view\\ > \ > \ > \
> > > \[!\[Dependabot compatibility score\](https://api.dependabot.com/badges/compatibility\_score?dependency-name=rack&package-manager=bundler&previous-version=2.0.8&new-version=2.1.1)\](https://dependabot.com/compatibility-score.html?dependency-name=rack&package-manager=bundler&previous-version=2.0.8&new-version=2.1.1) > > Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting \`@dependabot rebase\`. > > \[//\]: # (dependabot-automerge-start) > \[//\]: # (dependabot-automerge-end) > > \--- > > \ > \Dependabot commands and options\ > \
> > You can trigger Dependabot actions by commenting on this PR: > \- \`@dependabot rebase\` will rebase this PR > \- \`@dependabot recreate\` will recreate this PR, overwriting any edits that have been made to it > \- \`@dependabot merge\` will merge this PR after your CI passes on it > \- \`@dependabot squash and merge\` will squash and merge this PR after your CI passes on it > \- \`@dependabot cancel merge\` will cancel a previously requested merge and block automerging > \- \`@dependabot reopen\` will reopen this PR if it is closed > \- \`@dependabot close\` will close this PR and stop Dependabot recreating it. You can achieve the same result by closing it manually > \- \`@dependabot ignore this major version\` will close this PR and stop Dependabot creating any more for this major version (unless you reopen the PR or upgrade to it yourself) > \- \`@dependabot ignore this minor version\` will close this PR and stop Dependabot creating any more for this minor version (unless you reopen the PR or upgrade to it yourself) > \- \`@dependabot ignore this dependency\` will close this PR and stop Dependabot creating any more for this dependency (unless you reopen the PR or upgrade to it yourself) > \- \`@dependabot use these labels\` will set the current labels as the default for future PRs for this repo and language > \- \`@dependabot use these reviewers\` will set the current reviewers as the default for future PRs for this repo and language > \- \`@dependabot use these assignees\` will set the current assignees as the default for future PRs for this repo and language > \- \`@dependabot use this milestone\` will set the current milestone as the default for future PRs for this repo and language > \- \`@dependabot badge me\` will comment on this PR with code to add a "Dependabot enabled" badge to your readme > > Additionally, you can set the following in your Dependabot \[dashboard\](https://app.dependabot.com): > \- Update frequency (including time of day and day of week) > \- Pull request limits (per update run and/or open at any time) > \- Out-of-range updates (receive only lockfile updates, if desired) > \- Security updates (receive only security updates, if desired) > > > > \ --- _[View the full topic](https://meta.discourse.org/t/sidekiq-failing-to-render-after-rack-gem-upgrade/138429)._