Hi guys, I am following this guide (Install Discourse on macOS for development). I’m having an issue with installing Discourse (the same error as, https://meta.discourse.org/t/install-error-protocol-violation-with-postgresql/35160) and have ensured that the ‘config/database.yml’ attribute ‘prepared_statements = false’. My versions: ➜ discourse git:(master) ruby -v ruby 2.2.3p173 (2015-08-18 revision 51636) [x86_64-darwin15] ➜ discourse git:(master) rails -v Rails 4.2.4 ➜ discourse git:(master) psql --version psql (PostgreSQL) 9.4.5 List of installed extensions Name | Version | Schema | Description ---------+---------+------------+------------------------------------------------------------------- hstore | 1.3 | public | data type for storing sets of (key, value) pairs pg_trgm | 1.1 | public | text similarity measurement and index searching based on trigrams plpgsql | 1.0 | pg_catalog | PL/pgSQL procedural language (3 rows) The error: == Seed from /Users/ivanrlio/discourse/db/fixtures/002_groups.rb rake aborted! ActiveRecord::StatementInvalid: PG::ProtocolViolation: ERROR: bind message supplies 1 parameters, but prepared statement "a1" requires 0 : SELECT "groups".* FROM "groups" WHERE "groups"."id" = 0 LIMIT 1 /Users/ivanrlio/discourse/app/models/group.rb:236:in `lookup_group' /Users/ivanrlio/discourse/app/models/group.rb:222:in `block in ensure_automatic_groups!' /Users/ivanrlio/discourse/app/models/group.rb:221:in `each_key' /Users/ivanrlio/discourse/app/models/group.rb:221:in `ensure_automatic_groups!' (eval):1:in `block (2 levels) in run_file' PG::ProtocolViolation: ERROR: bind message supplies 1 parameters, but prepared statement "a1" requires 0 /Users/ivanrlio/discourse/app/models/group.rb:236:in `lookup_group' /Users/ivanrlio/discourse/app/models/group.rb:222:in `block in ensure_automatic_groups!' /Users/ivanrlio/discourse/app/models/group.rb:221:in `each_key' /Users/ivanrlio/discourse/app/models/group.rb:221:in `ensure_automatic_groups!' (eval):1:in `block (2 levels) in run_file' Any help would be much appreciated. Thanks

Did you add prepared_statements: false to both the development and test sections of the database.yml file? Also, you used an = sign in your post which wouldn’t work.

Install error : Protocol violation

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ivanrlio (Ivan) 8 בדצמבר,‏ 2015,‏ 9:30pm 3

Hi Neil,

It was missing from the ‘test’ section of the file.

Thanks!

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Install error : Protocol violation

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