I'm having this issue as well with an plastic production line that has shut down. For some reason my oil wells are not producing. It also says that their inventories are full. There is no oil present anywhere in the cities inventory. The wells are still running, just not producing anything.
*edit* I got the production working by tearing down the old wells and rebuilding them ..note: deleting and restarting production lines did not work.
*edit* I got the production working by tearing down the old wells and rebuilding them ..note: deleting and restarting production lines did not work.
I plan on living forever ..so far so good!