Merge pull request #16 from shelfio/feature/Extended-doc-with-trouble…

…shooting

Added troubleshooting section with the guide of fixing incompatible java version

README.md

@@ -64,6 +64,52 @@ module.exports = () => {
 it();
 ```
 
+## Troubleshooting
+
+<details>
+<summary> Issue running tests locally - Exception in thread "main"</summary>
+
+```shell
+Exception in thread "main'
+java.lang.UnsupportedOperationException The Security Manager is deprecated and will be removed in a future release
+at java.base/java.lang.System.setSecurityManager(System. java: 416)
+at ora.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.iava:71
+```
+The main reason why this issue appears is that you have an incompatible java version installed to run elastic locally.
+
+### What to do?
+
+1. List current java versions
+```shell
+$ /usr/libexec/java_home -V
+```
+
+2. If you see version 1.8.xxx
+   Add this command to your bashrc, zshrc, etc
+```shell
+$ /usr/libexec/java_home -v 1.8
+```
+
+3. If you see no versions or do not have a compatible version installed - Install version 1.8xxx
+https://www.java.com/en/download/
+
+4. Reload the console and check the java version with
+```shell
+$ java -version
+```
+Output for proper work
+```shell
+$ java -version
+java version "1.8.0_333"
+Java(TM) SE Runtime Environment (build 1.8.0_333-b02)
+Java HotSpot(TM) 64-Bit Server VM (build 25.333-b02, mixed mode)
+```
+
+5. Go to step 2 and set version 1.8xx as a default for the shell
+
+
+</details>
+
 ## See Also
 
 - [jest-dynamodb](https://github.com/shelfio/jest-dynamodb)