diff --git a/Algorithm/Clustering/AffinityPropagation.php b/Algorithm/Clustering/AffinityPropagation.php
index 032736161..9851fb837 100644
--- a/Algorithm/Clustering/AffinityPropagation.php
+++ b/Algorithm/Clustering/AffinityPropagation.php
@@ -22,244 +22,9 @@
  * @link    https://jingga.app
  * @see     ./clustering_overview.png
  * @since   1.0.0
+ *
+ * @todo Implement
  */
-final class AffinityPropagation implements ClusteringInterface
+final class AffinityPropagation
 {
-    /**
-     * Points of the cluster centers
-     *
-     * @var Point[]
-     * @since 1.0.0
-     */
-    private array $clusterCenters = [];
-
-    /**
-     * Cluster points
-     *
-     * Points in clusters (helper to avoid looping the cluster array)
-     *
-     * @var array
-     * @since 1.0.0
-     */
-    private array $clusters = [];
-
-    private array $similarityMatrix = [];
-
-    private array $responsibilityMatrix = [];
-
-    private array $availabilityMatrix = [];
-
-    /**
-     * Original points used for clusters
-     *
-     * @var Point[]
-     * @since 1.0.0
-     */
-    private array $points = [];
-
-    /**
-     * Create similarity matrix from points
-     *
-     * @param Point[] $points Points to create the similarity matrix for
-     *
-     * @return array<int, array<int, int|float>>
-     *
-     * @since 1.0.0
-     */
-    private function createSimilarityMatrix(array $points) : array
-    {
-        $n                = \count($points);
-        $coordinates      = \count($points[0]->coordinates);
-        $similarityMatrix = \array_fill(0, $n, []);
-
-        $temp = [];
-        for ($i = 0; $i < $n - 1; ++$i) {
-            for ($j = $i + 1; $j < $n; ++$j) {
-                $sum = 0.0;
-                for ($c = 0; $c < $coordinates; ++$c) {
-                    $sum += ($points[$i]->getCoordinate($c) - $points[$j]->getCoordinate($c)) * ($points[$i]->getCoordinate($c) - $points[$j]->getCoordinate($c));
-                }
-
-                $similarityMatrix[$i][$j] = -$sum;
-                $similarityMatrix[$j][$i] = -$sum;
-                $temp[]                   = $similarityMatrix[$i][$j];
-            }
-        }
-
-        \sort($temp);
-
-        $size   = $n * ($n - 1) / 2;
-        $median = $size % 2 === 0
-            ? ($temp[(int) ($size / 2)] + $temp[(int) ($size / 2 - 1)]) / 2
-            : $temp[(int) ($size / 2)];
-
-        for ($i = 0; $i < $n; ++$i) {
-            $similarityMatrix[$i][$i] = $median;
-        }
-
-        return $similarityMatrix;
-    }
-
-    /**
-     * Generate clusters for points
-     *
-     * @param Point[] $points Points to cluster
-     * @param int     $iterations Iterations for cluster generation
-     *
-     * @return void
-     *
-     * @since 1.0.0
-     */
-    public function generateClusters(array $points, int $iterations = 100) : void
-    {
-        $this->points = $points;
-        $n            = \count($points);
-
-        $this->similarityMatrix     = $this->createSimilarityMatrix($points);
-        $this->responsibilityMatrix = $this->similarityMatrix;
-        $this->availabilityMatrix   = $this->similarityMatrix;
-
-        for ($c = 0; $c < $iterations; ++$c) {
-            for ($i = 0; $i < $n; ++$i) {
-                for ($k = 0; $k < $n; ++$k) {
-                    $max = \PHP_INT_MIN;
-                    for ($j = 0; $j < $k; ++$j) {
-                        if (($temp = $this->similarityMatrix[$i][$j] + $this->availabilityMatrix[$i][$j]) > $max) {
-                            $max = $temp;
-                        }
-                    }
-
-                    for ($j = $k + 1; $j < $n; ++$j) {
-                        if (($temp = $this->similarityMatrix[$i][$j] + $this->availabilityMatrix[$i][$j]) > $max) {
-                            $max = $temp;
-                        }
-                    }
-
-                    $this->responsibilityMatrix[$i][$k] = (1 - 0.9) * ($this->similarityMatrix[$i][$k] - $max) + 0.9 * $this->responsibilityMatrix[$i][$k];
-                }
-            }
-
-            for ($i = 0; $i < $n; ++$i) {
-                for ($k = 0; $k < $n; ++$k) {
-                    $sum = 0.0;
-
-                    if ($i === $k) {
-                        for ($j = 0; $j < $i; ++$j) {
-                            $sum += \max(0.0, $this->responsibilityMatrix[$j][$k]);
-                        }
-
-                        for (++$j; $j < $n; ++$j) {
-                            $sum += \max(0.0, $this->responsibilityMatrix[$j][$k]);
-                        }
-
-                        $this->availabilityMatrix[$i][$k] = (1 - 0.9) * $sum + 0.9 * $this->availabilityMatrix[$i][$k];
-                    } else {
-                        $max = \max($i, $k);
-                        $min = \min($i, $k);
-
-                        for ($j = 0; $j < $min; ++$j) {
-                            $sum += \max(0.0, $this->responsibilityMatrix[$j][$k]);
-                        }
-
-                        for ($j = $min + 1; $j < $max; ++$j) {
-                            $sum += \max(0.0, $this->responsibilityMatrix[$j][$k]);
-                        }
-
-                        for ($j = $max + 1; $j < $n; ++$j) {
-                            $sum += \max(0.0, $this->responsibilityMatrix[$j][$k]);
-                        }
-
-                        $this->availabilityMatrix[$i][$k] = (1 - 0.9) * \min(0.0, $this->responsibilityMatrix[$k][$k] + $sum) + 0.9 * $this->availabilityMatrix[$i][$k];
-                    }
-                }
-            }
-        }
-
-        // find center points (exemplar)
-        for ($i = 0; $i < $n; ++$i) {
-            $temp = $this->responsibilityMatrix[$i][$i] + $this->availabilityMatrix[$i][$i];
-
-            if ($temp > 0) {
-                $this->clusterCenters[$i] = $this->points[$i];
-            }
-        }
-    }
-
-    /**
-     * Find the nearest group for a point
-     *
-     * @param array<int, array<int, int|float>> $similarityMatrix Similarity matrix
-     * @param int                               $point            Point id in the similarity matrix to compare
-     *
-     * @return int
-     *
-     * @since 1.0.0
-     */
-    private function findNearestGroup(array $similarityMatrix, int $point) : int
-    {
-        $maxSim = \PHP_INT_MIN;
-        $group  = 0;
-
-        foreach ($this->clusterCenters as $c => $_) {
-            if ($similarityMatrix[$point][$c] > $maxSim) {
-                $maxSim = $similarityMatrix[$point][$c];
-                $group  = $c;
-            }
-        }
-
-        return $group;
-    }
-
-    /**
-     * {@inheritdoc}
-     */
-    public function cluster(Point $point) : ?Point
-    {
-        $points   = $this->points;
-        $points[] = $point;
-
-        $similarityMatrix = $this->createSimilarityMatrix($points);
-
-        $c = $this->findNearestGroup(
-            $similarityMatrix,
-            \count($points) - 1,
-        );
-
-        return $this->clusterCenters[$c];
-    }
-
-    /**
-     * {@inheritdoc}
-     */
-    public function getClusters() : array
-    {
-        if (!empty($this->clusters)) {
-            return $this->clusters;
-        }
-
-        $n = \count($this->points);
-        for ($i = 0; $i < $n; ++$i) {
-            $group = $this->findNearestGroup($this->points, $i);
-
-            $this->clusters[$group] = $this->points[$i];
-        }
-
-        return $this->clusters;
-    }
-
-    /**
-     * {@inheritdoc}
-     */
-    public function getCentroids() : array
-    {
-        return $this->clusterCenters;
-    }
-
-    /**
-     * {@inheritdoc}
-     */
-    public function getNoise() : array
-    {
-        return [];
-    }
 }
diff --git a/Router/WebRouter.php b/Router/WebRouter.php
index a3658d619..aa27213d2 100755
--- a/Router/WebRouter.php
+++ b/Router/WebRouter.php
@@ -141,7 +141,7 @@ public function route(
             }
 
             foreach ($destination as $d) {
-                if (!$d['active']) {
+                if (!($d['active'] ?? true)) {
                     continue;
                 }
 
diff --git a/tests/Router/WebRouterTest.php b/tests/Router/WebRouterTest.php
index 315c79bf6..569a47686 100755
--- a/tests/Router/WebRouterTest.php
+++ b/tests/Router/WebRouterTest.php
@@ -156,7 +156,7 @@ public function testWithCSRF() : void
             [['dest' => '\Modules\Admin\Controller:viewCsrf']],
             $this->router->route(
                 (new HttpRequest(
-                    new HttpUri('http://test.com/backend/admin/settings/csrf/something?test')
+                    new HttpUri('http://test.com/backend/admin/settings/csrf?test')
                 ))->uri->getRoute(),
                 'csrf_string'
             )
@@ -173,7 +173,7 @@ public function testWithoutCSRF() : void
             ['dest' => RouteStatus::INVALID_CSRF],
             $this->router->route(
                 (new HttpRequest(
-                    new HttpUri('http://test.com/backend/admin/settings/csrf/something?test')
+                    new HttpUri('http://test.com/backend/admin/settings/csrf?test')
                 ))->uri->getRoute()
             )
         );
diff --git a/tests/Utils/Parser/Document/DocumentWriterTest.php b/tests/Utils/Parser/Document/DocumentWriterTest.php
index 184919e90..ba6f584a3 100644
--- a/tests/Utils/Parser/Document/DocumentWriterTest.php
+++ b/tests/Utils/Parser/Document/DocumentWriterTest.php
@@ -24,6 +24,20 @@
  */
 final class DocumentWriterTest extends \PHPUnit\Framework\TestCase
 {
+    protected function setUp() : void
+    {
+        if (\is_file(__DIR__ . '/data/WordMpdf.pdf')) {
+            \unlink(__DIR__ . '/data/WordMpdf.pdf');
+        }
+    }
+
+    protected function tearDown() : void
+    {
+        if (\is_file(__DIR__ . '/data/WordMpdf.pdf')) {
+            \unlink(__DIR__ . '/data/WordMpdf.pdf');
+        }
+    }
+
     public function testParsing() : void
     {
         $doc    = IOFactory::load(__DIR__ . '/data/Word.docx');
diff --git a/tests/Utils/Parser/Spreadsheet/SpreadsheetWriterTest.php b/tests/Utils/Parser/Spreadsheet/SpreadsheetWriterTest.php
index 40bd0fc16..3238fc12f 100644
--- a/tests/Utils/Parser/Spreadsheet/SpreadsheetWriterTest.php
+++ b/tests/Utils/Parser/Spreadsheet/SpreadsheetWriterTest.php
@@ -24,6 +24,20 @@
  */
 final class SpreadsheetWriterTest extends \PHPUnit\Framework\TestCase
 {
+    protected function setUp() : void
+    {
+        if (\is_file(__DIR__ . '/data/ExcelMpdf.pdf')) {
+            \unlink(__DIR__ . '/data/ExcelMpdf.pdf');
+        }
+    }
+
+    protected function tearDown() : void
+    {
+        if (\is_file(__DIR__ . '/data/ExcelMpdf.pdf')) {
+            \unlink(__DIR__ . '/data/ExcelMpdf.pdf');
+        }
+    }
+
     public function testParsing() : void
     {
         $sheet  = IOFactory::load(__DIR__ . '/data/Excel.xlsx');