diff --git a/.github/.idea/.github.iml b/.github/.idea/.github.iml
new file mode 100644
index 0000000..5e764c4
--- /dev/null
+++ b/.github/.idea/.github.iml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="WEB_MODULE" version="4">
+  <component name="Go" enabled="true" />
+  <component name="NewModuleRootManager">
+    <content url="file://$MODULE_DIR$" />
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>
\ No newline at end of file
diff --git a/.github/.idea/modules.xml b/.github/.idea/modules.xml
new file mode 100644
index 0000000..854e742
--- /dev/null
+++ b/.github/.idea/modules.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/.idea/.github.iml" filepath="$PROJECT_DIR$/.idea/.github.iml" />
+    </modules>
+  </component>
+</project>
\ No newline at end of file
diff --git a/.github/.idea/workspace.xml b/.github/.idea/workspace.xml
new file mode 100644
index 0000000..1c1a9e6
--- /dev/null
+++ b/.github/.idea/workspace.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="PropertiesComponent">
+    <property name="settings.editor.selected.configurable" value="editor.preferences.completion" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/go-app/internal/domain/domain.go b/go-app/internal/domain/domain.go
index ee1ed9e..8888ab6 100644
--- a/go-app/internal/domain/domain.go
+++ b/go-app/internal/domain/domain.go
@@ -78,7 +78,7 @@ func LoadStats4AllSites() types.Arc42Statistics {
 	a42s.Totals = calculateTotals(Stats4Sites)
 
 	// create Issue- and Bug Links
-	for index, _ := range types.Arc42sites {
+	for index := range types.Arc42sites {
 		badge.SetIssuesAndBugBadgeURLsForSite(&a42s.Stats4Site[index])
 	}
 
diff --git a/go-app/internal/plausible/vpvStatistics.go b/go-app/internal/plausible/vpvStatistics.go
index 2ad5eeb..70d8d5f 100644
--- a/go-app/internal/plausible/vpvStatistics.go
+++ b/go-app/internal/plausible/vpvStatistics.go
@@ -22,9 +22,6 @@ import (
 // The required (secret) API key is set within the initialization.
 var plausibleClient *plausible.Client = nil
 
-// need mutex to ensure isolated access to shared variable
-var mutex sync.Mutex
-
 var APIKEY string
 
 // init is called during system startup