I had just finished my regular commute (apprx. 25 miles), w/ 20 miles of range left. I parked my car, turned it off, and attached my Lvl 1 EV charger as usual. However; this time no dice. The charge ring cycled twice, and went dark. The cable indicator shows that power is going, but that's all (the fault indicator is not lit up, neither is the charging). There are no indicators on my dashboard either. I can still drive the vehicle, but I don't want to risk running it bone dry. This happened once before, that time I just let it sit off the charger for 3 days. Then miraculously it started charging after I plugged it in. Any ideas on what going on? Thank you.