diff --git a/Dockerfile b/Dockerfile
index 36ec5c5310b5faa4937dcb410f2ed561b2821510..7d2338dadf06773e603ea6b371f69f11dc79b316 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -4,7 +4,7 @@ WORKDIR /build
 COPY . /build
 RUN mkdir /build/public/css
 RUN gem install sass
-RUN sass --update scss:public/css --style compressed –no-source-map permalink--no-source-map
+RUN sass --update scss:public/css --style compressed
 
 
 # Prepare Webserver
diff --git "a/\342\200\223-no-source-map" "b/\342\200\223-no-source-map"
new file mode 100644
index 0000000000000000000000000000000000000000..b0a36636b8c2aab7d90526ef639c4497cd659ae5
--- /dev/null
+++ "b/\342\200\223-no-source-map"
@@ -0,0 +1,44 @@
+/*
+Error: Invalid property: "Backtrace:" (no value).
+        on line 4 of –-no-source-map
+
+1: /*
+2: Errno::ENOENT: No such file or directory @ rb_sysopen - –-no-source-map
+3: 
+4: Backtrace:
+5: D:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/sass-3.7.4/lib/sass/plugin/compiler.rb:454:in `read'
+6: D:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/sass-3.7.4/lib/sass/plugin/compiler.rb:454:in `update_stylesheet'
+7: D:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/sass-3.7.4/lib/sass/plugin/compiler.rb:215:in `block in update_stylesheets'
+8: D:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/sass-3.7.4/lib/sass/plugin/compiler.rb:209:in `each'
+9: D:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/sass-3.7.4/lib/sass/plugin/compiler.rb:209:in `update_stylesheets'
+
+Backtrace:
+–-no-source-map:4
+D:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/sass-3.7.4/lib/sass/engine.rb:755:in `parse_property'
+D:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/sass-3.7.4/lib/sass/engine.rb:707:in `parse_property_or_rule'
+D:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/sass-3.7.4/lib/sass/engine.rb:666:in `parse_line'
+D:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/sass-3.7.4/lib/sass/engine.rb:539:in `build_tree'
+D:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/sass-3.7.4/lib/sass/engine.rb:558:in `block in append_children'
+D:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/sass-3.7.4/lib/sass/engine.rb:557:in `each'
+D:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/sass-3.7.4/lib/sass/engine.rb:557:in `append_children'
+D:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/sass-3.7.4/lib/sass/engine.rb:417:in `_to_tree'
+D:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/sass-3.7.4/lib/sass/engine.rb:389:in `_render_with_sourcemap'
+D:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/sass-3.7.4/lib/sass/engine.rb:307:in `render_with_sourcemap'
+D:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/sass-3.7.4/lib/sass/plugin/compiler.rb:462:in `update_stylesheet'
+D:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/sass-3.7.4/lib/sass/plugin/compiler.rb:215:in `block in update_stylesheets'
+D:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/sass-3.7.4/lib/sass/plugin/compiler.rb:209:in `each'
+D:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/sass-3.7.4/lib/sass/plugin/compiler.rb:209:in `update_stylesheets'
+D:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/sass-3.7.4/lib/sass/plugin/compiler.rb:294:in `watch'
+D:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/sass-3.7.4/lib/sass/plugin.rb:109:in `method_missing'
+D:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/sass-3.7.4/lib/sass/exec/sass_scss.rb:358:in `watch_or_update'
+D:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/sass-3.7.4/lib/sass/exec/sass_scss.rb:51:in `process_result'
+D:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/sass-3.7.4/lib/sass/exec/base.rb:50:in `parse'
+D:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/sass-3.7.4/lib/sass/exec/base.rb:18:in `parse!'
+D:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/sass-3.7.4/bin/sass:13:in `<top (required)>'
+D:/Ruby27-x64/bin/sass:23:in `load'
+D:/Ruby27-x64/bin/sass:23:in `<main>'
+*/
+body:before {
+  white-space: pre;
+  font-family: monospace;
+  content: "Error: Invalid property: \"Backtrace:\" (no value).\A         on line 4 of –-no-source-map\A \A 1: /*\A 2: Errno::ENOENT: No such file or directory @ rb_sysopen - –-no-source-map\A 3: \A 4: Backtrace:\A 5: D:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/sass-3.7.4/lib/sass/plugin/compiler.rb:454:in `read'\A 6: D:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/sass-3.7.4/lib/sass/plugin/compiler.rb:454:in `update_stylesheet'\A 7: D:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/sass-3.7.4/lib/sass/plugin/compiler.rb:215:in `block in update_stylesheets'\A 8: D:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/sass-3.7.4/lib/sass/plugin/compiler.rb:209:in `each'\A 9: D:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/sass-3.7.4/lib/sass/plugin/compiler.rb:209:in `update_stylesheets'"; }
diff --git "a/\342\200\223-no-source-mapd" "b/\342\200\223-no-source-mapd"
new file mode 100644
index 0000000000000000000000000000000000000000..1bb637639e5be5c82d30b8b2c361c4d322d35880
--- /dev/null
+++ "b/\342\200\223-no-source-mapd"
@@ -0,0 +1,23 @@
+/*
+Errno::ENOENT: No such file or directory @ rb_sysopen - –-no-source-mapd
+
+Backtrace:
+D:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/sass-3.7.4/lib/sass/plugin/compiler.rb:454:in `read'
+D:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/sass-3.7.4/lib/sass/plugin/compiler.rb:454:in `update_stylesheet'
+D:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/sass-3.7.4/lib/sass/plugin/compiler.rb:215:in `block in update_stylesheets'
+D:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/sass-3.7.4/lib/sass/plugin/compiler.rb:209:in `each'
+D:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/sass-3.7.4/lib/sass/plugin/compiler.rb:209:in `update_stylesheets'
+D:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/sass-3.7.4/lib/sass/plugin/compiler.rb:294:in `watch'
+D:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/sass-3.7.4/lib/sass/plugin.rb:109:in `method_missing'
+D:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/sass-3.7.4/lib/sass/exec/sass_scss.rb:358:in `watch_or_update'
+D:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/sass-3.7.4/lib/sass/exec/sass_scss.rb:51:in `process_result'
+D:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/sass-3.7.4/lib/sass/exec/base.rb:50:in `parse'
+D:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/sass-3.7.4/lib/sass/exec/base.rb:18:in `parse!'
+D:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/sass-3.7.4/bin/sass:13:in `<top (required)>'
+D:/Ruby27-x64/bin/sass:23:in `load'
+D:/Ruby27-x64/bin/sass:23:in `<main>'
+*/
+body:before {
+  white-space: pre;
+  font-family: monospace;
+  content: "Errno::ENOENT: No such file or directory @ rb_sysopen - –-no-source-mapd"; }