diff --git a/bridges/BandcampBridge.php b/bridges/BandcampBridge.php
index 20b4ea93..c041b2b3 100644
--- a/bridges/BandcampBridge.php
+++ b/bridges/BandcampBridge.php
@@ -313,6 +313,7 @@ class BandcampBridge extends BridgeAbstract
     private function apiGet($endpoint, $query_data)
     {
         $url = self::URI . 'api/' . $endpoint . '?' . http_build_query($query_data);
+        // todo: 429 Too Many Requests happens a lot
         $data = json_decode(getContents($url));
         return $data;
     }
diff --git a/bridges/GoogleSearchBridge.php b/bridges/GoogleSearchBridge.php
index 406cf2a9..59465e89 100644
--- a/bridges/GoogleSearchBridge.php
+++ b/bridges/GoogleSearchBridge.php
@@ -23,6 +23,7 @@ class GoogleSearchBridge extends BridgeAbstract
 
     public function collectData()
     {
+        // todo: wrap this in try..catch because 429 too many requests happens a lot
         $dom = getSimpleHTMLDOM($this->getURI(), ['Accept-language: en-US']);
         if (!$dom) {
             returnServerError('No results for this query.');
diff --git a/bridges/MoebooruBridge.php b/bridges/MoebooruBridge.php
index 1af08575..a7793c39 100644
--- a/bridges/MoebooruBridge.php
+++ b/bridges/MoebooruBridge.php
@@ -40,6 +40,9 @@ class MoebooruBridge extends BridgeAbstract
 
         foreach ($data as $datai) {
             $json = json_decode($datai, true);
+            if ($json === null) {
+                continue;
+            }
             $item = [];
             $item['uri'] = $this->getURI() . '/post/show/' . $json['id'];
             $item['postid'] = $json['id'];
diff --git a/bridges/NasaApodBridge.php b/bridges/NasaApodBridge.php
index 5aff63aa..1f6d351a 100644
--- a/bridges/NasaApodBridge.php
+++ b/bridges/NasaApodBridge.php
@@ -26,9 +26,10 @@ class NasaApodBridge extends BridgeAbstract
             //Extract image and explanation
             $image_wrapper = $picture_html->find('a', 1);
             $image_path = $image_wrapper->href;
+            // This image is not present when youtube embed
             $img_placeholder = $image_wrapper->find('img', 0);
-            $img_alt = $img_placeholder->alt;
-            $img_style = $img_placeholder->style;
+            $img_alt = $img_placeholder->alt ?? '';
+            $img_style = $img_placeholder->style ?? '';
             $image_uri = self::URI . $image_path;
             $new_img_placeholder = "<img src=\"$image_uri\" alt=\"$img_alt\" style=\"$img_style\">";
             $media = "<a href=\"$image_uri\">$new_img_placeholder</a>";
diff --git a/bridges/NationalGeographicBridge.php b/bridges/NationalGeographicBridge.php
index 146da79c..79a0600b 100644
--- a/bridges/NationalGeographicBridge.php
+++ b/bridges/NationalGeographicBridge.php
@@ -170,10 +170,8 @@ class NationalGeographicBridge extends BridgeAbstract
         $image = $story['img'];
         $item['enclosures'][] = $image['src'];
 
-        $tags = $story['tags'];
-        foreach ($tags as $tag) {
-            $tag_name = $tag['name'];
-            $item['categories'][] = $tag_name;
+        foreach ($story['tags'] as $tag) {
+            $item['categories'][] = $tag['name'] ?? $tag;
         }
 
         $this->items[] = $item;
diff --git a/bridges/RedditBridge.php b/bridges/RedditBridge.php
index 7350e849..de80f09d 100644
--- a/bridges/RedditBridge.php
+++ b/bridges/RedditBridge.php
@@ -150,8 +150,6 @@ class RedditBridge extends BridgeAbstract
             $flair = '';
         }
 
-
-
         foreach ($subreddits as $subreddit) {
             $name = trim($subreddit);
             $values = getContents(self::URI
@@ -207,14 +205,17 @@ class RedditBridge extends BridgeAbstract
 
                     $item['content']
                         = htmlspecialchars_decode($data->selftext_html);
-                } elseif (isset($data->post_hint) ? $data->post_hint == 'link' : false) {
+                } elseif (isset($data->post_hint) && $data->post_hint == 'link') {
                     // Link with preview
 
                     if (isset($data->media)) {
-                        // Reddit embeds content for some sites (e.g. Twitter)
-                        $embed = htmlspecialchars_decode(
-                            $data->media->oembed->html
-                        );
+                        // todo: maybe switch on the type
+                        if (isset($data->media->oembed->html)) {
+                            // Reddit embeds content for some sites (e.g. Twitter)
+                            $embed = htmlspecialchars_decode($data->media->oembed->html);
+                        } else {
+                            $embed = '';
+                        }
                     } else {
                         $embed = '';
                     }
diff --git a/bridges/ReutersBridge.php b/bridges/ReutersBridge.php
index 17f6a705..77370d65 100644
--- a/bridges/ReutersBridge.php
+++ b/bridges/ReutersBridge.php
@@ -498,13 +498,15 @@ EOD;
                     break;
                 case 'table':
                     $table = '<table>';
-                    $theaders = $content['header'];
-                    $tr = '<tr>';
-                    foreach ($theaders as $header) {
-                        $tr .= '<th>' . $header . '</th>';
+                    $theaders = $content['header'] ?? null;
+                    if ($theaders) {
+                        $tr = '<tr>';
+                        foreach ($theaders as $header) {
+                            $tr .= '<th>' . $header . '</th>';
+                        }
+                        $tr .= '</tr>';
+                        $table .= $tr;
                     }
-                    $tr .= '</tr>';
-                    $table .= $tr;
                     $rows = $content['rows'];
                     foreach ($rows as $row) {
                         $tr = '<tr>';
diff --git a/caches/FileCache.php b/caches/FileCache.php
index fde7d18d..d5817a2d 100644
--- a/caches/FileCache.php
+++ b/caches/FileCache.php
@@ -60,6 +60,7 @@ class FileCache implements CacheInterface
                 continue;
             } elseif ($cacheFile->isFile()) {
                 if (filemtime($cacheFile->getPathname()) < time() - $seconds) {
+                    // todo: sometimes this file doesn't exists
                     unlink($cacheFile->getPathname());
                 }
             }
@@ -68,7 +69,7 @@ class FileCache implements CacheInterface
 
     public function setScope($scope)
     {
-        if (is_null($scope) || !is_string($scope)) {
+        if (!is_string($scope)) {
             throw new \Exception('The given scope is invalid!');
         }
 
diff --git a/lib/Logger.php b/lib/Logger.php
index 3f4f1034..0b01c07f 100644
--- a/lib/Logger.php
+++ b/lib/Logger.php
@@ -38,7 +38,12 @@ final class Logger
                 'Exception InvalidArgumentException: Format name invalid',
                 'Exception InvalidArgumentException: Unknown format given',
                 'Exception InvalidArgumentException: Bridge name invalid',
+                'Exception Exception: Invalid action',
                 'Exception Exception: twitter: No results for this query',
+                // telegram
+                'Exception Exception: Unable to find channel. The channel is non-existing or non-public',
+                // fb
+                'Exception Exception: This group is not public! RSS-Bridge only supports public groups!',
             ];
             foreach ($ignoredExceptions as $ignoredException) {
                 if (str_starts_with($context['message'], $ignoredException)) {