/*
Error: Undefined variable: "$avatar-size".
        on line 18 of src/scss/components/avatar.scss

13: .avatar {
14:   position: relative;
15:   white-space: nowrap;
16:   border-radius: 50%;
17:   vertical-align: middle;
18:   height: $avatar-size;
19:   width: $avatar-size;
20:   color: $white;
21:   cursor: pointer;
22:   display: inline-flex;
23:   justify-content: center;

Backtrace:
src/scss/components/avatar.scss:18
/Library/Ruby/Gems/2.6.0/gems/sass-3.7.4/lib/sass/script/tree/variable.rb:49:in `_perform'
/Library/Ruby/Gems/2.6.0/gems/sass-3.7.4/lib/sass/script/tree/node.rb:50:in `perform'
/Library/Ruby/Gems/2.6.0/gems/sass-3.7.4/lib/sass/tree/visitors/perform.rb:398:in `visit_prop'
/Library/Ruby/Gems/2.6.0/gems/sass-3.7.4/lib/sass/tree/visitors/base.rb:36:in `visit'
/Library/Ruby/Gems/2.6.0/gems/sass-3.7.4/lib/sass/tree/visitors/perform.rb:158:in `block in visit'
/Library/Ruby/Gems/2.6.0/gems/sass-3.7.4/lib/sass/stack.rb:79:in `block in with_base'
/Library/Ruby/Gems/2.6.0/gems/sass-3.7.4/lib/sass/stack.rb:135:in `with_frame'
/Library/Ruby/Gems/2.6.0/gems/sass-3.7.4/lib/sass/stack.rb:79:in `with_base'
/Library/Ruby/Gems/2.6.0/gems/sass-3.7.4/lib/sass/tree/visitors/perform.rb:158:in `visit'
/Library/Ruby/Gems/2.6.0/gems/sass-3.7.4/lib/sass/tree/visitors/perform.rb:440:in `block (2 levels) in visit_rule'
/Library/Ruby/Gems/2.6.0/gems/sass-3.7.4/lib/sass/tree/visitors/perform.rb:440:in `map'
/Library/Ruby/Gems/2.6.0/gems/sass-3.7.4/lib/sass/tree/visitors/perform.rb:440:in `block in visit_rule'
/Library/Ruby/Gems/2.6.0/gems/sass-3.7.4/lib/sass/tree/visitors/perform.rb:179:in `with_environment'
/Library/Ruby/Gems/2.6.0/gems/sass-3.7.4/lib/sass/tree/visitors/perform.rb:438:in `visit_rule'
/Library/Ruby/Gems/2.6.0/gems/sass-3.7.4/lib/sass/tree/visitors/base.rb:36:in `visit'
/Library/Ruby/Gems/2.6.0/gems/sass-3.7.4/lib/sass/tree/visitors/perform.rb:158:in `block in visit'
/Library/Ruby/Gems/2.6.0/gems/sass-3.7.4/lib/sass/stack.rb:79:in `block in with_base'
/Library/Ruby/Gems/2.6.0/gems/sass-3.7.4/lib/sass/stack.rb:135:in `with_frame'
/Library/Ruby/Gems/2.6.0/gems/sass-3.7.4/lib/sass/stack.rb:79:in `with_base'
/Library/Ruby/Gems/2.6.0/gems/sass-3.7.4/lib/sass/tree/visitors/perform.rb:158:in `visit'
/Library/Ruby/Gems/2.6.0/gems/sass-3.7.4/lib/sass/tree/visitors/base.rb:52:in `block in visit_children'
/Library/Ruby/Gems/2.6.0/gems/sass-3.7.4/lib/sass/tree/visitors/base.rb:52:in `map'
/Library/Ruby/Gems/2.6.0/gems/sass-3.7.4/lib/sass/tree/visitors/base.rb:52:in `visit_children'
/Library/Ruby/Gems/2.6.0/gems/sass-3.7.4/lib/sass/tree/visitors/perform.rb:167:in `block in visit_children'
/Library/Ruby/Gems/2.6.0/gems/sass-3.7.4/lib/sass/tree/visitors/perform.rb:179:in `with_environment'
/Library/Ruby/Gems/2.6.0/gems/sass-3.7.4/lib/sass/tree/visitors/perform.rb:166:in `visit_children'
/Library/Ruby/Gems/2.6.0/gems/sass-3.7.4/lib/sass/tree/visitors/base.rb:36:in `block in visit'
/Library/Ruby/Gems/2.6.0/gems/sass-3.7.4/lib/sass/tree/visitors/perform.rb:186:in `visit_root'
/Library/Ruby/Gems/2.6.0/gems/sass-3.7.4/lib/sass/tree/visitors/base.rb:36:in `visit'
/Library/Ruby/Gems/2.6.0/gems/sass-3.7.4/lib/sass/tree/visitors/perform.rb:157:in `visit'
/Library/Ruby/Gems/2.6.0/gems/sass-3.7.4/lib/sass/tree/visitors/perform.rb:10:in `visit'
/Library/Ruby/Gems/2.6.0/gems/sass-3.7.4/lib/sass/tree/root_node.rb:36:in `css_tree'
/Library/Ruby/Gems/2.6.0/gems/sass-3.7.4/lib/sass/tree/root_node.rb:29:in `render_with_sourcemap'
/Library/Ruby/Gems/2.6.0/gems/sass-3.7.4/lib/sass/engine.rb:389:in `_render_with_sourcemap'
/Library/Ruby/Gems/2.6.0/gems/sass-3.7.4/lib/sass/engine.rb:307:in `render_with_sourcemap'
/Library/Ruby/Gems/2.6.0/gems/sass-3.7.4/lib/sass/plugin/compiler.rb:462:in `update_stylesheet'
/Library/Ruby/Gems/2.6.0/gems/sass-3.7.4/lib/sass/plugin/compiler.rb:215:in `block in update_stylesheets'
/Library/Ruby/Gems/2.6.0/gems/sass-3.7.4/lib/sass/plugin/compiler.rb:209:in `each'
/Library/Ruby/Gems/2.6.0/gems/sass-3.7.4/lib/sass/plugin/compiler.rb:209:in `update_stylesheets'
/Library/Ruby/Gems/2.6.0/gems/sass-3.7.4/lib/sass/plugin/compiler.rb:294:in `watch'
/Library/Ruby/Gems/2.6.0/gems/sass-3.7.4/lib/sass/plugin.rb:109:in `method_missing'
/Library/Ruby/Gems/2.6.0/gems/sass-3.7.4/lib/sass/exec/sass_scss.rb:358:in `watch_or_update'
/Library/Ruby/Gems/2.6.0/gems/sass-3.7.4/lib/sass/exec/sass_scss.rb:51:in `process_result'
/Library/Ruby/Gems/2.6.0/gems/sass-3.7.4/lib/sass/exec/base.rb:50:in `parse'
/Library/Ruby/Gems/2.6.0/gems/sass-3.7.4/lib/sass/exec/base.rb:18:in `parse!'
/Library/Ruby/Gems/2.6.0/gems/sass-3.7.4/bin/sass:13:in `<top (required)>'
/usr/local/bin/sass:23:in `load'
/usr/local/bin/sass:23:in `<main>'
*/
body:before {
  white-space: pre;
  font-family: monospace;
  content: "Error: Undefined variable: \"$avatar-size\".\A         on line 18 of src/scss/components/avatar.scss\A \A 13: .avatar {\A 14:   position: relative;\A 15:   white-space: nowrap;\A 16:   border-radius: 50%;\A 17:   vertical-align: middle;\A 18:   height: $avatar-size;\A 19:   width: $avatar-size;\A 20:   color: $white;\A 21:   cursor: pointer;\A 22:   display: inline-flex;\A 23:   justify-content: center;"; }