You likely ran the battery to the bitter end. At this point you’ll need a in-line voltage Amp meter to see if the system is even accepting a charge. Here is one example of the tool you’ll need [https://satechi.net/products/satechi-type-c-power-meter-for-new-macbook-macbook-pro-type-c-devices|Power Meter Tester for USB-C Devices]
Be prepared in needing a new battery here is the guide on what will need to be done to get to it [guide|122269] Presently iFixit does not offer the battery for your series.