When I am try to build the project it gives this error.

```
Errors occurred during the build.
Errors running builder 'Maven Project Builder' on project 'ProjectName'.
Could not calculate build plan: Plugin org.apache.maven.plugins:maven-resources-plugin:2.6 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-resources-plugin:jar:2.6
Plugin org.apache.maven.plugins:maven-resources-plugin:2.6 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-resources-plugin:jar:2.6
Could not calculate build plan: Plugin org.apache.maven.plugins:maven-resources-plugin:2.6 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-resources-plugin:jar:2.6
Plugin org.apache.maven.plugins:maven-resources-plugin:2.6 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-resources-plugin:jar:2.6

```

My Java version is 1.8 and Maven version is 3.2.5

And also when I first time configure Maven in my computer and I check that Maven configured correctly with `mvn --version` command and it works fine.
But after restart my computer and checked Maven is work correctly.
Then it says:

```
C:\Users\User Name>mvn --version
'mvn' is not recognized as an internal or external command,
operable program or batch file.

```