No such algorithm: SHA1withRSA for provider BC

Trying to build/export my KWGT widgets but getting the following error

The error I get when trying to build: No such algorithm: SHA1withRSA for provider BC

When trying to export I get this error: Starting up... Creating zip file Storing keystore password
no such algorithm: SHA1withRSA for provider BC

No clue what this means so any help would be appreciated