Fixes #588 - changes outputlevel to errors by default

CHANGELOG.md

@@ -33,6 +33,7 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/) and this p
 - Fixes [#566](https://github.com/eamodio/vscode-gitlens/issues/566) — History error with UNC
 - Fixes [#572](https://github.com/eamodio/vscode-gitlens/issues/572) — Explorer cant expand some branch folders
 - Fixes [#584](https://github.com/eamodio/vscode-gitlens/issues/584) — Unexpected results when opening diff from file history
+- Fixes [#588](https://github.com/eamodio/vscode-gitlens/issues/588) — Output channel doesn't exist with `gitlens.outputLevel` default
 - Fixes an issue where comparing a file with its staged revision doesn't show any content
 - Fixes an issue where the workspace folder added by the _Explore Repository from Here_ command (`gitlens.views.exploreRepoRevision`) would fail to load in certain cases
 

package.json

@@ -954,7 +954,7 @@
                 },
                 "gitlens.outputLevel": {
                     "type": "string",
-                    "default": "silent",
+                    "default": "errors",
                     "enum": [
                         "silent",
                         "errors",