hi i got this erro massage when trying to mine on pcmining

Starting Diagnostics
Starting Mining Software
Setting up Miner Engine. Instance: 1
Engine Type: ZecEwbfMiner, Auto Download: True, EnginePath: , Subtype: Disabled, CustomExecutable:
Added rule for: C:\Users\\AppData\Local\AwesomeMiner\Zec.miner.0.3.4b_1\0.3.4b\miner.exe
C:\Users\\AppData\Local\AwesomeMiner\Zec.miner.0.3.4b_1\0.3.4b\miner.exe  --server pcmining.xyz --port 3958 --user Rig2 --pass x --api 0.0.0.0:4028   (WindowMode: ConsoleFormat, EngineType: ZecEwbfMiner, IsProfitMiner: False)
Configuration:

> +-------------------------------------------------+
> |         EWBF's Zcash CUDA miner. 0.3.4b         |
> +-------------------------------------------------+
> INFO: Current pool: pcmining.xyz:3958
> INFO: Selected pools: 1
> INFO: Solver: Auto.
> INFO: Devices: All.
> INFO: Temperature limit: 90
> INFO: Api: Listen on 0.0.0.0:4028
> ---------------------------------------------------
> INFO: Target: 0006aaaaaaaaaaaa...
> INFO: Detected new work: d4e7
> ERROR: Stratum authorization error
Failed to start miner process: Process has exited, so the requested information is not available.
Failed to start miner in Diagnostics mode
Diagnostics completed