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An example error thrown when the server is running but isn't getting responses from the min-eVOLVER.
I have found this happens when the Arduino IDE program (used for putting min-eVOLVER code on the control board) Serial Monitor is open and connected to the SAMD21. Close the Serial Monitor and you will be able to start the server.
The most common reason for this is the computer is falling asleep. Make sure your computer is set to not fall asleep.
If your computer is managed by an IT department, they will sometimes control these settings remotely. Therefore, you will set your computer to never sleep, but will come back with the setting changed. In this case, contact your IT department.
On Mac: Alternatively, you can type the command
caffeinateinto a terminal window and your computer will never sleep
OD is one of the most useful and most challenging aspects of eVOLVER. However the min-eVOLVER OD system is nearly the same as the main eVOLVER. Check the main OD troubleshooting page for potential causes and fixes.