If the locktime (height or time) is still not reached, the error message alongside with the server error should be "non-final".

That looks like a missing input error which was caused by trying to double-spend a already spent output;
Can you check your wallet for possible closing transaction that wasn't labeled?
Paste the "open transaction's" TXID (in a block explorer) and check the non-change address output if it's already spent.
Also check if it was sent to one of your own wallet's addresses.

If it didn't see a confirmed closing transaction, it won't transition to "Closed" but rather stay "Open"
and "Reestablishing" is a state based from the other peer of the open channel, means the channel is open but trying to re-connect to the other ln node.