No key with alias found in keystore

Our android project consists of mobile and wear app ( wear app is under development) and we are trying to release the mobile app. When we try to generate signed apk we get this follow message :

Error:Execution failed for task ':wear:packageRelease'.
> com.android.ide.common.signing.KeytoolException: Failed to read key
toyanathpatro from store "/home/adventure/toyanath_patro_key/toyanath_patro_key":
No key with alias 'toyanathpatro' found in keystore /home/adventure/toyanath_patro_key/toyanath_patro_key

As it reads it says failed task for :wear:packageRelease where in reality we are selecting just the mobile while choosing for signing the apk.

Can anyone point out my blunder ? Thanks in advance.

The problem seems to be with the wrongly spelled key alias In my case the alias should have been toyanath patro where I wrongly tried to use toyanathpatro . So the best suggestion would be:

1. Don't use space or invisible character in the key alias. as far as possible

2. There is a small selection button (3 horizontal dots) on the right side of key alias editable field. Use that button to find the alias which resides in that signature file.