[NEW-Free] Arduino Serial Communication Plugin "Serial COM v3"-(Fork from UE4Duino)

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PIE: Error: Blueprint Runtime Error: “Accessed None trying to read property MySerialPort”. Node: Serial Print Line Graph: EventGraph Function: Execute Ubergraph SM Ball 01 Blueprint Blueprint: SM_Ball_01_Blueprint
PIE: Error: Blueprint Runtime Error: “Accessed None trying to read property MySerialPort”. Node: Close Serial Port Graph: EventGraph Function: Execute Ubergraph SM Ball 01 Blueprint Blueprint: SM_Ball_01_Blueprint

Kindly help