[ActionMailbox] SendGrid webhook causing `Rack::Multipart::BoundaryTooLongError`

[appsignal]

[Incident: #2414] Rack::Multipart::BoundaryTooLongError

Message

multipart data over retained size limit

Backtrace (up to last 10 lines)

rack (3.1.18) lib/rack/multipart/parser.rb:478:in 'Rack::Multipart::Parser#update_retained_size'
rack (3.1.18) lib/rack/multipart/parser.rb:466:in 'Rack::Multipart::Parser#handle_mime_body'
rack (3.1.18) lib/rack/multipart/parser.rb:256:in 'block in Rack::Multipart::Parser#parse'
<internal:kernel>:168:in 'Kernel#loop'
rack (3.1.18) lib/rack/multipart/parser.rb:246:in 'Rack::Multipart::Parser#parse'
rack (3.1.18) lib/rack/multipart/parser.rb:125:in 'Rack::Multipart::Parser.parse'
rack (3.1.18) lib/rack/multipart.rb:62:in 'Rack::Multipart.parse_multipart'
rack (3.1.18) lib/rack/request.rb:527:in 'Rack::Request::Helpers#POST'
rack (3.1.18) lib/rack/method_override.rb:49:in 'Rack::MethodOverride#method_override_param'
rack (3.1.18) lib/rack/method_override.rb:33:in 'Rack::MethodOverride#method_override'

View on AppSignal: https://appsignal.com/hack-club/sites/6596247683eb67648f30f807/exceptions/incidents/2414?id=last