diff --git a/Changelog.md b/Changelog.md
index b40deafc8..2e4ca13fd 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -43,6 +43,7 @@ Although the chat was never enabled per default and was marked as experimental,
 * Fix html-syntax in some handlebars templates [#8251](https://github.com/diaspora/diaspora/pull/8251)
 * Remove `chat_enabled` flag from archive export [#8265](https://github.com/diaspora/diaspora/pull/8265)
 * Change thumbnails in image slideshow to squares [#8275](https://github.com/diaspora/diaspora/pull/8275)
+* Replace uglifier with terser for JS compression [#8268](https://github.com/diaspora/diaspora/pull/8268)
 
 ## Bug fixes
 
diff --git a/Gemfile b/Gemfile
index 6ae1fbda0..59739ec97 100644
--- a/Gemfile
+++ b/Gemfile
@@ -47,7 +47,7 @@ gem "sidekiq-cron", "1.2.0"
 
 # Compression
 
-gem "uglifier", "4.2.0"
+gem "terser", "1.1.5"
 
 # Configuration
 
diff --git a/Gemfile.lock b/Gemfile.lock
index d918478e2..1bf8afb66 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -721,6 +721,8 @@ GEM
     temple (0.8.2)
     terminal-table (1.8.0)
       unicode-display_width (~> 1.1, >= 1.1.1)
+    terser (1.1.5)
+      execjs (>= 0.3.0, < 3)
     thor (1.1.0)
     thread_safe (0.3.6)
     tilt (2.0.10)
@@ -747,8 +749,6 @@ GEM
       ethon (>= 0.9.0)
     tzinfo (1.2.9)
       thread_safe (~> 0.1)
-    uglifier (4.2.0)
-      execjs (>= 0.3.0, < 3)
     unf (0.1.4)
       unf_ext
     unf_ext (0.0.7.7)
@@ -918,13 +918,13 @@ DEPENDENCIES
   sprockets-es6 (= 0.9.2)
   sprockets-rails (= 3.2.2)
   string-direction (= 1.2.2)
+  terser (= 1.1.5)
   timecop (= 0.9.4)
   toml-rb (= 2.0.1)
   turbo_dev_assets (= 0.0.2)
   twitter (= 7.0.0)
   twitter-text (= 3.1.0)
   typhoeus (= 1.4.0)
-  uglifier (= 4.2.0)
   unicorn (= 6.0.0)
   unicorn-worker-killer (= 0.4.5)
   uuid (= 2.3.9)
diff --git a/app/models/user.rb b/app/models/user.rb
index 14eb4562c..788fe6aba 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -442,8 +442,13 @@ class User < ApplicationRecord
     aq = self.aspects.create(:name => I18n.t('aspects.seed.acquaintances'))
 
     if AppConfig.settings.autofollow_on_join?
-      default_account = Person.find_or_fetch_by_identifier(AppConfig.settings.autofollow_on_join_user)
-      self.share_with(default_account, aq) if default_account
+      begin
+        default_account = Person.find_or_fetch_by_identifier(AppConfig.settings.autofollow_on_join_user)
+        share_with(default_account, aq)
+      rescue DiasporaFederation::Discovery::DiscoveryError
+        logger.warn "Error auto-sharing with #{AppConfig.settings.autofollow_on_join_user}
+                     fix autofollow_on_join_user in configuration."
+      end
     end
     aq
   end
diff --git a/app/workers/fetch_webfinger.rb b/app/workers/fetch_webfinger.rb
index d2f00b0dc..dbf4f95e6 100644
--- a/app/workers/fetch_webfinger.rb
+++ b/app/workers/fetch_webfinger.rb
@@ -12,7 +12,9 @@ module Workers
       person = Person.find_or_fetch_by_identifier(account)
 
       # also, schedule to fetch a few public posts from that person
-      Diaspora::Fetcher::Public.queue_for(person) unless person.nil?
+      Diaspora::Fetcher::Public.queue_for(person)
+    rescue DiasporaFederation::Discovery::DiscoveryError
+      # Ignored
     end
   end
 end
diff --git a/config/environments/production.rb b/config/environments/production.rb
index 304613a67..13a91a017 100644
--- a/config/environments/production.rb
+++ b/config/environments/production.rb
@@ -27,7 +27,7 @@ Rails.application.configure do
   config.public_file_server.enabled = ENV["RAILS_SERVE_STATIC_FILES"].present?
 
   # Compress JavaScripts and CSS.
-  config.assets.js_compressor = :uglifier
+  config.assets.js_compressor = :terser
   # config.assets.css_compressor = :sass
 
   # Do not fallback to assets pipeline if a precompiled asset is missed.
diff --git a/lib/bookmarklet_renderer.rb b/lib/bookmarklet_renderer.rb
index 75b2b51f1..a8e998a73 100644
--- a/lib/bookmarklet_renderer.rb
+++ b/lib/bookmarklet_renderer.rb
@@ -30,7 +30,7 @@ class BookmarkletRenderer
 
     def compile
       src = File.read(source)
-      @body = Uglifier.compile(src)
+      @body = Terser.compile(src)
       FileUtils.mkdir_p cached_path.dirname
       File.open(cached_path, "w") {|f| f.write(@body) }
     end
diff --git a/spec/models/user_spec.rb b/spec/models/user_spec.rb
index ff159932a..6784f4a92 100644
--- a/spec/models/user_spec.rb
+++ b/spec/models/user_spec.rb
@@ -797,10 +797,10 @@ describe User, type: :model do
       context "with autofollow sharing enabled" do
         it "should start sharing with autofollow account" do
           AppConfig.settings.autofollow_on_join = true
-          AppConfig.settings.autofollow_on_join_user = "one"
-
-          expect(Person).to receive(:find_or_fetch_by_identifier).with("one")
+          person = FactoryBot.build(:person)
+          AppConfig.settings.autofollow_on_join_user = person.diaspora_handle
 
+          expect(Person).to receive(:find_or_fetch_by_identifier).with(person.diaspora_handle).and_return(person)
           user.seed_aspects
         end
       end
diff --git a/spec/workers/fetch_webfinger_spec.rb b/spec/workers/fetch_webfinger_spec.rb
index 02382e9b4..73506a173 100644
--- a/spec/workers/fetch_webfinger_spec.rb
+++ b/spec/workers/fetch_webfinger_spec.rb
@@ -11,7 +11,7 @@ describe Workers::FetchWebfinger do
   end
 
   it "should webfinger and queue no job to fetch public posts if the person is not found" do
-    allow(Person).to receive(:find_or_fetch_by_identifier).and_return(nil)
+    allow(Person).to receive(:find_or_fetch_by_identifier).and_raise DiasporaFederation::Discovery::DiscoveryError
 
     expect(Diaspora::Fetcher::Public).not_to receive(:queue_for)