wallet dead pls what to do??!

checked last night worked fine.. today just can't open it (Zelcash Wallet.Jar)

got an error msg:

A general enexpected critical error has occured:
error: couln't connect to server: EOF reached (code 1)
(make sure server is running and you are connecting to the correct RPC port)
See the colnsole/logfile output for more deatailed information!


Any help highly appreciated! Thx

edit: this is what i found in the .log file:

2018-02-07 20:19:38 ERROR: CheckProofOfWork(): hash doesn't match nBits
2018-02-07 20:19:38 ERROR: LoadBlockIndex(): CheckProofOfWork failed: CBlockIndex(pprev=0x1e6aa07af80, nHeight=4983, merkle=d81925f8a43a1d9325055fa4d39c8775db8788f2ec70c355c712d70f5114cc53, hashBlock=1d40498e9aa55086df3e9ced30f0f84f92735ee0f8f892522b2334749217997b)
2018-02-07 20:19:38 : Error loading block database.
Please restart with -reindex to recover.
2018-02-07 20:19:38 Aborted block database rebuild. Exiting.
2018-02-07 20:19:38 Shutdown: In progress...
2018-02-07 20:19:38 scheduler thread interrupt
2018-02-07 20:19:38 StopRPC: waiting for async rpc workers to stop
2018-02-07 20:19:38 StopNode()
2018-02-07 20:19:38 Shutdown: done

sry but to be honest with You guys : have no idea now what to do... Just don't want to f*#kup my wallet have some ZEL on it ...