diff --git a/content/01-cyanine-theme/04-copy.md b/content/01-cyanine-theme/04-copy.md
deleted file mode 100644
index 22ef1f6..0000000
--- a/content/01-cyanine-theme/04-copy.md
+++ /dev/null
@@ -1,4 +0,0 @@
-# copy
-
-Content
-
diff --git a/content/01-cyanine-theme/04-copy.txt b/content/01-cyanine-theme/04-copy.txt
deleted file mode 100644
index ab06d15..0000000
--- a/content/01-cyanine-theme/04-copy.txt
+++ /dev/null
@@ -1 +0,0 @@
-["# copy","Danke sch\u00f6n f\u00fcr das ganze hier!","## bla","Content changed","Das sollte auch so"]
\ No newline at end of file
diff --git a/content/01-cyanine-theme/04-copy.yaml b/content/01-cyanine-theme/04-copy.yaml
deleted file mode 100644
index 65c9565..0000000
--- a/content/01-cyanine-theme/04-copy.yaml
+++ /dev/null
@@ -1,13 +0,0 @@
-meta:
-    navtitle: copy
-    owner: trendschau
-    author: 'Sebastian Schürmanns'
-    created: '2024-01-28'
-    time: 21-47-19
-    reference: /welcome/write-content
-    referencetype: copy
-    hide: false
-    noindex: false
-    modified: '2024-01-28'
-    title: copy
-    description: Content
diff --git a/data/navigation/navi-draft.txt b/data/navigation/navi-draft.txt
index e1d2e39..84fcabc 100644
--- a/data/navigation/navi-draft.txt
+++ b/data/navigation/navi-draft.txt
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\ No newline at end of file
diff --git a/data/navigation/navi-extended.txt b/data/navigation/navi-extended.txt
index 14a0b5b..69087af 100644
--- a/data/navigation/navi-extended.txt
+++ b/data/navigation/navi-extended.txt
@@ -64,9 +64,3 @@
     noindex: false
     path: /01-cyanine-theme/03-content-elements.md
     keyPath: '1.3'
-/cyanine-theme/copy:
-    navtitle: copy
-    hide: false
-    noindex: false
-    path: /01-cyanine-theme/04-copy.txtmd
-    keyPath: '1.4'
diff --git a/system/typemill/Extensions/ParsedownExtension.php b/system/typemill/Extensions/ParsedownExtension.php
index f64ee30..22fe2d6 100644
--- a/system/typemill/Extensions/ParsedownExtension.php
+++ b/system/typemill/Extensions/ParsedownExtension.php
@@ -545,7 +545,6 @@ class ParsedownExtension extends \ParsedownExtra
     # has a fix for visual editor mode and option for spanFootnotes
     public function buildFootnoteElement()
     {
-
         # we do not need a footnote element if we use w3c inline style with spans for footnotes
         if($this->spanFootnotes)
         {
@@ -564,7 +563,7 @@ class ParsedownExtension extends \ParsedownExtra
             ),
         );
 
-        uasort($this->DefinitionData['Footnote'], 'self::sortFootnotes');
+        uasort($this->DefinitionData['Footnote'], [$this, 'sortFootnotes']);
 
         foreach ($this->DefinitionData['Footnote'] as $definitionId => $DefinitionData)
         {