![environment variables - SendGrid + Ruby on Rails 6 on DigitalOcean Apps + Errno::ECONNREFUSED (Connection refused - connect(2) for "localhost" port 25): - Stack Overflow environment variables - SendGrid + Ruby on Rails 6 on DigitalOcean Apps + Errno::ECONNREFUSED (Connection refused - connect(2) for "localhost" port 25): - Stack Overflow](https://i.stack.imgur.com/wv0cR.png)
environment variables - SendGrid + Ruby on Rails 6 on DigitalOcean Apps + Errno::ECONNREFUSED (Connection refused - connect(2) for "localhost" port 25): - Stack Overflow
![Connection failed for localhost:5555 [Designer 10.5] - webMethods - Software AG Tech Community & Forums Connection failed for localhost:5555 [Designer 10.5] - webMethods - Software AG Tech Community & Forums](https://global.discourse-cdn.com/techcommunity/original/3X/d/4/d43aaf090b0412402d4c98f89f4c7064ba395549.jpeg)
Connection failed for localhost:5555 [Designer 10.5] - webMethods - Software AG Tech Community & Forums
![outputs.influxdb] When writing to [http://localhost:8086]: database "telegraf" creation failed: Post "http://localhost:8086/query": dial tcp 127.0.0.1:8086: connect: connection refused - Welcome & Getting Started - InfluxData Community Forums outputs.influxdb] When writing to [http://localhost:8086]: database "telegraf" creation failed: Post "http://localhost:8086/query": dial tcp 127.0.0.1:8086: connect: connection refused - Welcome & Getting Started - InfluxData Community Forums](https://global.discourse-cdn.com/business4/uploads/influxdata/original/2X/e/e1f86cb2b49f0a7df8ab9de8927a0c08ff67568f.png)
outputs.influxdb] When writing to [http://localhost:8086]: database "telegraf" creation failed: Post "http://localhost:8086/query": dial tcp 127.0.0.1:8086: connect: connection refused - Welcome & Getting Started - InfluxData Community Forums
![Action_endpoint on Ubuntu? Error: couldn't connect to the server - Rasa Open Source - Rasa Community Forum Action_endpoint on Ubuntu? Error: couldn't connect to the server - Rasa Open Source - Rasa Community Forum](https://europe1.discourse-cdn.com/business20/uploads/rasa/original/3X/c/9/c9dded6ae5465075bb0fd5e10d168436acf7b4a6.png)
Action_endpoint on Ubuntu? Error: couldn't connect to the server - Rasa Open Source - Rasa Community Forum
![main Something happen while delivering an email exception Errno ECONNREFUSED Connection refused - connect 2 for localhost port 25 | Edureka Community main Something happen while delivering an email exception Errno ECONNREFUSED Connection refused - connect 2 for localhost port 25 | Edureka Community](https://www.edureka.co/community/categoryimages/40.png)
main Something happen while delivering an email exception Errno ECONNREFUSED Connection refused - connect 2 for localhost port 25 | Edureka Community
![WSL2 cannot connect to localhost when the service is running on Windows · Issue #5211 · microsoft/WSL · GitHub WSL2 cannot connect to localhost when the service is running on Windows · Issue #5211 · microsoft/WSL · GitHub](https://user-images.githubusercontent.com/9895061/81917174-6d3eef80-9607-11ea-905f-a6aeb010bd39.png)
WSL2 cannot connect to localhost when the service is running on Windows · Issue #5211 · microsoft/WSL · GitHub
![Failed to open TCP connection to localhost:2633 (connection refused - connect (2) for "localhost" port 2633 - Community Support - OpenNebula Community Forum Failed to open TCP connection to localhost:2633 (connection refused - connect (2) for "localhost" port 2633 - Community Support - OpenNebula Community Forum](https://global.discourse-cdn.com/standard11/uploads/opennebula/original/2X/2/267bd0dc29668700a2f7883fca1beb41b6ccb0af.png)
Failed to open TCP connection to localhost:2633 (connection refused - connect (2) for "localhost" port 2633 - Community Support - OpenNebula Community Forum
![javascript - Failed to connect to localhost port 8000: Connection refused in Node.js - Stack Overflow javascript - Failed to connect to localhost port 8000: Connection refused in Node.js - Stack Overflow](https://i.stack.imgur.com/Wic77.png)
javascript - Failed to connect to localhost port 8000: Connection refused in Node.js - Stack Overflow
![Ubuntu 18.04 - Issues and curl: (7) Failed to connect to localhost port 8888: Connection refused · Issue #25 · EOSIO/eosio-project-demux-example · GitHub Ubuntu 18.04 - Issues and curl: (7) Failed to connect to localhost port 8888: Connection refused · Issue #25 · EOSIO/eosio-project-demux-example · GitHub](https://user-images.githubusercontent.com/40128659/44989960-7297fb80-af44-11e8-89b7-8659ef17a57b.png)
Ubuntu 18.04 - Issues and curl: (7) Failed to connect to localhost port 8888: Connection refused · Issue #25 · EOSIO/eosio-project-demux-example · GitHub
![Failed to open TCP connection to localhost:2633 (connection refused - connect (2) for "localhost" port 2633 - Community Support - OpenNebula Community Forum Failed to open TCP connection to localhost:2633 (connection refused - connect (2) for "localhost" port 2633 - Community Support - OpenNebula Community Forum](https://global.discourse-cdn.com/standard11/uploads/opennebula/original/2X/2/2a8a90a7432818c057f4bb1ed9595ddafa53c2cb.png)
Failed to open TCP connection to localhost:2633 (connection refused - connect (2) for "localhost" port 2633 - Community Support - OpenNebula Community Forum
![Couldn't start project on Android: could not connect to TCP port 5580: cannot connect to 127.0.0.1:5580: - Expo SDK - Forums Couldn't start project on Android: could not connect to TCP port 5580: cannot connect to 127.0.0.1:5580: - Expo SDK - Forums](https://global.discourse-cdn.com/business5/uploads/expo/original/3X/7/a/7a345284277d80247781fe549dd35e53a0e84ad2.png)