Each Node has a button on the top right corner, which indicates the Node state,
if you hover your mouse over the button it will show information about the Node,
status of the Node and Error information if there is any.
Info Buttons States
||Indicates that the node is in its normal state.
||Indicates that there are options available, you can click it to see the options.
||Indicates that there is an error, hover your mouse over it to see error details.