diff --git a/openbas-front/src/admin/components/atomic_testings/atomic_testing/TargetResultsDetail.tsx b/openbas-front/src/admin/components/atomic_testings/atomic_testing/TargetResultsDetail.tsx
index deeceb6bf6..cd30ef0b7e 100644
--- a/openbas-front/src/admin/components/atomic_testings/atomic_testing/TargetResultsDetail.tsx
+++ b/openbas-front/src/admin/components/atomic_testings/atomic_testing/TargetResultsDetail.tsx
@@ -14,6 +14,7 @@ import nodeTypes from './types/nodes';
 import useAutoLayout, { type LayoutOptions } from '../../../../utils/flows/useAutoLayout';
 import { InjectResultDtoContext, InjectResultDtoContextType } from '../InjectResultDtoContext';
 import ItemResult from '../../../../components/ItemResult';
+import InjectIcon from '../../common/injects/InjectIcon';
 
 interface Steptarget {
   label: string;
@@ -49,6 +50,7 @@ interface Props {
 
 const TargetResultsDetailFlow: FunctionComponent<Props> = ({
   injectId,
+  injectType,
   lastExecutionStartDate,
   lastExecutionEndDate,
   target,
@@ -229,11 +231,18 @@ const TargetResultsDetailFlow: FunctionComponent<Props> = ({
                 result.inject_expectation_results.map((collector, index) => (
                   <Grid key={index} item={true} xs={4}>
                     <div style={{ display: 'flex', alignItems: 'center', marginBottom: 10 }}>
-                      <img
-                        src={`/api/images/collectors/id/${collector.sourceId}`}
-                        alt={collector.sourceId}
-                        style={{ width: 20, height: 20, borderRadius: 4 }}
-                      />
+                      {collector.sourceId != null
+                        ? (<img
+                            src={`/api/images/collectors/${collector.sourceId}`}
+                            alt={collector.sourceId}
+                            style={{ width: 20, height: 20, borderRadius: 4 }}
+                           />) : (
+                             <InjectIcon
+                               tooltip={t(injectType)}
+                               type={injectType}
+                               variant="inline"
+                             />)
+                    }
                       <Typography variant="h4" style={{ margin: '2px 0 0 10px' }}>
                         {collector.sourceName}
                       </Typography>
diff --git a/openbas-front/src/admin/components/common/articles/Articles.tsx b/openbas-front/src/admin/components/common/articles/Articles.tsx
index ce8d8e9100..8736031ac4 100644
--- a/openbas-front/src/admin/components/common/articles/Articles.tsx
+++ b/openbas-front/src/admin/components/common/articles/Articles.tsx
@@ -23,6 +23,7 @@ import CreateArticle from './CreateArticle';
 import type { ChannelsHelper } from '../../../../actions/channels/channel-helper';
 import { ArticleContext, PermissionsContext } from '../Context';
 import Empty from '../../../../components/Empty';
+import ChannelColor from '../../../../public/components/channels/ChannelColor';
 
 const useStyles = makeStyles(() => ({
   channel: {
@@ -92,18 +93,6 @@ const Articles: FunctionComponent<Props> = ({ articles }) => {
       || channels.map((o) => o.id).includes(n.article_fullchannel.channel_id ?? ''),
     filtering.filterAndSort(fullArticles),
   );
-  const channelColor = (type: string | undefined) => {
-    switch (type) {
-      case 'newspaper':
-        return '#3f51b5';
-      case 'microblogging':
-        return '#00bcd4';
-      case 'tv':
-        return '#ff9800';
-      default:
-        return '#ef41e1';
-    }
-  };
 
   // Context
   const { previewArticleUrl } = useContext(ArticleContext);
@@ -180,7 +169,7 @@ const Articles: FunctionComponent<Props> = ({ articles }) => {
                   avatar={
                     <Avatar
                       sx={{
-                        bgcolor: channelColor(
+                        bgcolor: ChannelColor(
                           article.article_fullchannel?.channel_type,
                         ),
                       }}
@@ -260,10 +249,10 @@ const Articles: FunctionComponent<Props> = ({ articles }) => {
                           }
                           classes={{ root: classes.channel }}
                           style={{
-                            color: channelColor(
+                            color: ChannelColor(
                               article.article_fullchannel?.channel_type,
                             ),
-                            borderColor: channelColor(
+                            borderColor: ChannelColor(
                               article.article_fullchannel?.channel_type,
                             ),
                           }}
diff --git a/openbas-front/src/public/components/challenges/ChallengesPlayer.js b/openbas-front/src/public/components/challenges/ChallengesPlayer.js
index a91dd02101..22391db7b0 100644
--- a/openbas-front/src/public/components/challenges/ChallengesPlayer.js
+++ b/openbas-front/src/public/components/challenges/ChallengesPlayer.js
@@ -260,7 +260,7 @@ const ChallengesPlayer = () => {
             color="primary"
             variant="outlined"
             component={Link}
-            to={`/admin/exercises/${exerciseId}/definition/challenges`}
+            to={`/admin/exercises/${exerciseId}/definition`}
             style={{ position: 'absolute', top: 20, left: 20 }}
           >
             {t('Back to administration')}
diff --git a/openbas-front/src/public/components/channels/ChannelColor.tsx b/openbas-front/src/public/components/channels/ChannelColor.tsx
new file mode 100644
index 0000000000..f60637c43c
--- /dev/null
+++ b/openbas-front/src/public/components/channels/ChannelColor.tsx
@@ -0,0 +1,14 @@
+const ChannelColor = (type: string | undefined) => {
+  switch (type) {
+    case 'newspaper':
+      return '#3f51b5';
+    case 'microblogging':
+      return '#00bcd4';
+    case 'tv':
+      return '#ff9800';
+    default:
+      return '#ef41e1';
+  }
+};
+
+export default ChannelColor;
diff --git a/openbas-front/src/public/components/channels/ChannelNewspaper.js b/openbas-front/src/public/components/channels/ChannelNewspaper.js
index c056a1b1e5..12b0b89b1d 100644
--- a/openbas-front/src/public/components/channels/ChannelNewspaper.js
+++ b/openbas-front/src/public/components/channels/ChannelNewspaper.js
@@ -82,18 +82,18 @@ const ChannelNewspaper = ({ channelReader }) => {
         </div>
       )}
       {channel.channel_mode !== 'logo' && (
-        <Typography
-          variant="h1"
-          style={{
-            textAlign: 'center',
-            color: isDark
-              ? channel.channel_primary_color_dark
-              : channel.channel_primary_color_light,
-            fontSize: 40,
-          }}
-        >
-          {channel.channel_name}
-        </Typography>
+      <Typography
+        variant="h1"
+        style={{
+          textAlign: 'center',
+          color: isDark
+            ? channel.channel_primary_color_dark
+            : channel.channel_primary_color_light,
+          fontSize: 40,
+        }}
+      >
+        {channel.channel_name}
+      </Typography>
       )}
       <Typography
         variant="h2"
diff --git a/openbas-front/src/public/components/channels/ChannelPlayer.js b/openbas-front/src/public/components/channels/ChannelPlayer.js
index fd6a860c4a..c8db235c40 100644
--- a/openbas-front/src/public/components/channels/ChannelPlayer.js
+++ b/openbas-front/src/public/components/channels/ChannelPlayer.js
@@ -59,7 +59,7 @@ const ChannelPlayer = () => {
             color="primary"
             variant="outlined"
             component={Link}
-            to={`/admin/exercises/${exerciseId}/definition/channel`}
+            to={`/admin/exercises/${exerciseId}/definition`}
             style={{ position: 'absolute', top: 20, left: 20 }}
           >
             {t('Back to administration')}
diff --git a/openbas-front/src/public/components/lessons/LessonsPlayer.js b/openbas-front/src/public/components/lessons/LessonsPlayer.js
index d63386547c..8df9e495f7 100644
--- a/openbas-front/src/public/components/lessons/LessonsPlayer.js
+++ b/openbas-front/src/public/components/lessons/LessonsPlayer.js
@@ -148,7 +148,7 @@ const LessonsPlayer = () => {
             color="primary"
             variant="outlined"
             component={Link}
-            to={`/admin/exercises/${exerciseId}/results/lessons`}
+            to={`/admin/exercises/${exerciseId}/lessons`}
             style={{ position: 'absolute', top: 20, left: 20 }}
           >
             {t('Back to administration')}
diff --git a/openbas-front/src/utils/hooks/useDataLoader.js b/openbas-front/src/utils/hooks/useDataLoader.js
index 9a7141f5d7..bd58abf332 100644
--- a/openbas-front/src/utils/hooks/useDataLoader.js
+++ b/openbas-front/src/utils/hooks/useDataLoader.js
@@ -25,7 +25,9 @@ const useDataLoader = (loader = () => {}) => {
       const current = new Date().getTime();
       if (current - lastPingDate > EVENT_PING_MAX_TIME) {
         clearInterval(autoReConnect);
-        sseClient.close();
+        if (sseClient != null) {
+          sseClient.close();
+        }
         sseConnect();
       }
     }, EVENT_TRY_DELAY);
@@ -56,7 +58,9 @@ const useDataLoader = (loader = () => {}) => {
     });
     sseClient.onerror = () => {
       clearInterval(autoReConnect);
-      sseClient.close();
+      if (sseClient != null) {
+        sseClient.close();
+      }
       const timeFromLastPingDate = new Date().getTime() - lastPingDate;
       if (timeFromLastPingDate < ERROR_30S_MAX_TIME) {
         setTimeout(sseConnect, ERROR_500MS_DELAY);// Before 30s time to retry is 500ms