fix links (#1271)

docs-2.0/20.appendix/6.eco-tool-version.md

@@ -116,7 +116,7 @@ Nebula Algorithm (Algorithm for short) is a Spark application based on [GraphX](
 
 ## Nebula Analytics
 
-Nebula Analytics is an application that integrates the open-source Plato Graph Computing Framework, with which Nebula Analytics performs graph computations on Nebula Graph database data. For details, see [What is Nebula Analytics](../nebula-plato.md).
+Nebula Analytics is an application that integrates the open-source Plato Graph Computing Framework, with which Nebula Analytics performs graph computations on Nebula Graph database data. For details, see [What is Nebula Analytics](../nebula-analytics.md).
 
 |Nebula Graph version|Analytics version|
 |:---|:---|

docs-2.0/20.appendix/learning-path.md

@@ -125,7 +125,7 @@ This topic is for anyone interested in learning more about Nebula Graph. You can
 
   | Document |
   | ------------------------------------------------------------ |
-  |[Create snapshots](../7.data-security/3.manage-snapshot.md)|
+  |[Create snapshots](../backup-and-restore/3.manage-snapshot.md)|
 
 <!--
 - Resource isolation

docs-2.0/4.deployment-and-installation/3.upgrade-nebula-graph/upgrade-nebula-graph-to-latest.md

@@ -180,7 +180,7 @@ To upgrade Nebula Graph from historical versions to {{nebula.release}}:
   nebula> MATCH (v) RETURN v LIMIT 5;
   ```
 
-  You can also test against [new features]((../../20.appendix/releasenote.md)) in version {{nebula.release}}.
+  You can also test against [new features](../../20.appendix/releasenote.md) in version {{nebula.release}}.
 
 ## Upgrade failure and rollback
 

docs-2.0/5.configurations-and-logs/1.configurations/3.graph-config.md

@@ -101,7 +101,7 @@ For all parameters and their current values, see [Configurations](1.configuratio
 
 ## Audit configurations
 
-The audit log is only available in the Enterprise Edition. For details, see [Audit log](2.log-management/audit-log.md).
+The audit log is only available in the Enterprise Edition. For details, see [Audit log](../2.log-management/audit-log.md).
 
 ## Metrics configurations
 

docs-2.0/nebula-explorer/ex-ug-query-exploration.md

@@ -6,7 +6,7 @@
 
 !!! compatibility "Legacy version compatibility"
 
-    For versions of Nebula Graph below 3.0.0, you need to create an index before querying data. For more information, see [Create an index](../../3.ngql-guide/14.native-index-statements/1.create-native-index.md).
+    For versions of Nebula Graph below 3.0.0, you need to create an index before querying data. For more information, see [Create an index](../3.ngql-guide/14.native-index-statements/1.create-native-index.md).
 
 Click the **Start** ![query](https://docs-cdn.nebula-graph.com.cn/figures/nav-query2.png) icon to query target data on the Explorer page. The queried data will be displayed on the canvas. You have the following ways to query data:
 

docs-2.0/nebula-studio/manage-schema/st-ug-crud-edge-type.md

@@ -4,7 +4,7 @@ After a graph space is created in Nebula Graph, you can create edge types. With
 
 ## Studio version
 
-Studio of v{{ studio.release }} or later versions supports this function. For more information, see [check updates](../about-studio/st-ug-check-updates.md).
+Studio of v{{ studio.release }} or later versions supports this function. For more information, see [check updates](../about-studio/st-ug-release-note.md).
 
 ## Prerequisites
 

docs-2.0/nebula-studio/manage-schema/st-ug-crud-index.md

@@ -8,7 +8,7 @@ You can create an index for a Tag and/or an Edge type. An index lets traversal s
 
 ## Studio version
 
-Studio of v{{ studio.release }} or later versions supports this function. For more information, see [check updates](../about-studio/st-ug-check-updates.md).
+Studio of v{{ studio.release }} or later versions supports this function. For more information, see [check updates](../about-studio/st-ug-release-note.md).
 
 ## Prerequisites
 

docs-2.0/nebula-studio/manage-schema/st-ug-crud-space.md

@@ -4,7 +4,7 @@ When Studio is connected to Nebula Graph, you can create or delete a graph space
 
 ## Studio version
 
-Studio of v{{ studio.release }} or later versions supports this function. For more information, see [check updates](../about-studio/st-ug-check-updates.md).
+Studio of v{{ studio.release }} or later versions supports this function. For more information, see [check updates](../about-studio/st-ug-release-note.md).
 
 ## Prerequisites
 
@@ -49,7 +49,7 @@ To create a graph space on the **Schema** page, follow these steps:
 
 !!! danger
 
-    Deleting the space will delete all the data in it, and the deleted data cannot be restored if it is not [backed up](../../7.data-security/3.manage-snapshot.md).
+    Deleting the space will delete all the data in it, and the deleted data cannot be restored if it is not [backed up](../../backup-and-restore/3.manage-snapshot.md).
 
 To delete a graph space on the **Schema** page, follow these steps:
 

docs-2.0/nebula-studio/manage-schema/st-ug-crud-tag.md

@@ -4,7 +4,7 @@ After a graph space is created in Nebula Graph, you can create tags. With Studio
 
 ## Studio version
 
-Studio of v{{ studio.release}} or later versions supports this function. For more information, see [check updates](../about-studio/st-ug-check-updates.md).
+Studio of v{{ studio.release}} or later versions supports this function. For more information, see [check updates](../about-studio/st-ug-release-note.md).
 
 ## Prerequisites
 

docs-2.0/nebula-studio/quick-start/st-ug-console.md

@@ -19,7 +19,7 @@ The following table lists various functions on the console interface.
 |  9  |  statement running status   |  After running the nGQL statement, the statement running status is displayed. If the statement runs successfully, the statement is displayed in green. If the statement fails, the statement is displayed in red.   |
 |  10  | add to favorites | Click the ![save](https://docs-cdn.nebula-graph.com.cn/figures/studio-btn-save.png) button to save the statement as a favorite, the button for the favorite statement is colored in yellow exhibit.|
 |  11  |  export CSV file or PNG file |  After running the nGQL statement to return the result, when the result is in **Table** window, click the ![download](https://docs-cdn.nebula-graph.com.cn/figures/studio-btn-download.png) button to export as a CSV file. Switch to the **Graph** window and click the ![download](https://docs-cdn.nebula-graph.com.cn/figures/studio-btn-download.png) button to save the results as a CSV file or PNG image export. |
-|  12  |  expand/hide execution results  | Click the ![up](https://docs-cdn.nebula-graph.com.cn/figures/studio-btn-up.png) button to hide the result or click ![down](https ://docs-cdn.nebula-graph.com.cn/figures/studio-btn-down.png) button to expand the result. |
+|  12  |  expand/hide execution results  | Click the ![up](https://docs-cdn.nebula-graph.com.cn/figures/studio-btn-up.png) button to hide the result or click ![down](https://docs-cdn.nebula-graph.com.cn/figures/studio-btn-down.png) button to expand the result. |
 |  13  |  close execution results | Click the ![close](https://docs-cdn.nebula-graph.com.cn/figures/studio-btn-close.png) button to close the result returned by this nGQL statement. |
 |  14  |  **Table** window | Display the result from running nGQL statement. If the statement returns results, the window displays the results in a table. |
 |  15  |  **Graph** window | Display the result from running nGQL statement. If the statement returns the complete vertex-edge result, the window displays the result as a graph . Click the ![expand](https://docs-cdn.nebula-graph.com.cn/figures/studio-btn-back.png) button on the right to view the overview panel. |

docs-2.0/nebula-studio/quick-start/st-ug-import-data.md

@@ -67,6 +67,4 @@ To batch import data, follow these steps:
 6. After importing data, you can view logs, download logs, download configuration files, and delete tasks on the **Import Data** tab.
   ![import completed](https://docs-cdn.nebula-graph.com.cn/figures/st-ug-012-en.png)
 
-## Next to do
 
-When the data are imported to v{{nebula.release}}, you can [query graph data](st-ug-explore.md).

docs-2.0/nebula-studio/troubleshooting/st-ug-faq.md

@@ -6,7 +6,7 @@
 
     1. Confirm that Nebula Graph is the latest version. If you use Docker Compose to deploy the Nebula Graph database, it is recommended to run `docker-compose pull && docker-compose up -d` to pull the latest Docker image and start the container.
 
-    2. Confirm that Studio is the latest version. For more information, refer to [check updates](../about-studio/st-ug-check-updates.md).
+    2. Confirm that Studio is the latest version. For more information, refer to [check updates](../about-studio/st-ug-release-note.md).
 
     3. Search the [nebula forum](https://discuss.nebula-graph.io/), [nebula](https://github.com/vesoft-inc/nebula) and [nebula-studio](https://github.com/vesoft-inc/nebula-studio) projects on the GitHub to confirm if there are already similar problems.
 

mkdocs.yml

@@ -528,6 +528,7 @@ nav:
       - Write tools: 20.appendix/write-tools.md
       - How to contribute: 15.contribution/how-to-contribute.md
       - History timeline: 20.appendix/history.md
+      - Error code: 20.appendix/error-code.md
 
   - 中文手册: https://docs.nebula-graph.com.cn/
   - PDF: ./pdf/NebulaGraph-EN.pdf