validateSwagger exception

[damc-dev]

Describe the bug

The validateSwagger Gradle task fails due to exception:

org.yaml.snakeyaml.events.MappingStartEvent.<init>(Ljava/lang/String;Ljava/lang/String;ZLorg/yaml/snakeyaml/error/Mark;Lorg/yaml/snakeyaml/error/Mark;Ljava/lang/Boolean;)V

To Reproduce:

1. Create new directory

2. Run gradle init

3. Download https://github.com/int128/gradle-swagger-generator-plugin/blob/master/acceptance-test/examples/openapi-v2-petstore.yaml into directory

4. Update build.gradle

plugins {
  id 'org.hidetake.swagger.generator' version '2.18.1'
}

validateSwagger {
    inputFile = file('openapi-v2-petstore.yaml')
}

5. run gradlew validateSwagger

Expected behavior:

Validates swagger spec

Environment

Plugin version: 2.18.1
Gradle version: 5.4.1
Java version:
openjdk version "1.8.0_172"
OpenJDK Runtime Environment (Zulu 8.30.0.1-win64) (build 1.8.0_172-b01)
OpenJDK 64-Bit Server VM (Zulu 8.30.0.1-win64) (build 25.172-b01, mixed mode)

OS: Windows 10