Deprecation warning: CLI options definitions were upgraded with "type" property

[Lusitaniae]

Serverless: Deprecation warning: CLI options definitions were upgraded with "type" property (which could be one of "string", "boolean", "multiple"). Below listed plugins do not predefine type for introduced options:
             - ServerlessPlugin for "diffTool", "localTemplate"
            Please report this issue in plugin issue tracker.
            Starting with next major release, this will be communicated with a thrown error.
            More Info: https://www.serverless.com/framework/docs/deprecations/#CLI_OPTIONS_SCHEMA
Serverless: Deprecation warning: Unresolved variable references will be communicated with a thrown error, starting from next major
            More Info: https://www.serverless.com/framework/docs/deprecations/#VARIABLES_ERROR_ON_UNRESOLVED