Cannot generate api for playWS

Codegen cli shows an error for generating a playWS client for a given api

Command ran

java -jar ./swagger-codegen-cli-3.0.35.jar generate -i https://petstore3.swagger.io/api/v3/openapi.json -l java -c .\config.json

Config is

{
    "usePlayWS" : true
}

The error produced is

Exception in thread "Thread-0" java.lang.RuntimeException: Could not generate api file for 'Pet'
        at io.swagger.codegen.v3.DefaultGenerator.generateApis(DefaultGenerator.java:588)
        at io.swagger.codegen.v3.DefaultGenerator.generate(DefaultGenerator.java:791)
        at io.swagger.codegen.v3.cli.cmd.Generate.run(Generate.java:388)
        at java.base/java.lang.Thread.run(Thread.java:833)
Caused by: java.io.FileNotFoundException: /handlebars/Java/handlebars/Java/play25/api.mustache
        at com.github.jknack.handlebars.io.URLTemplateLoader.sourceAt(URLTemplateLoader.java:70)
        at com.github.jknack.handlebars.Handlebars.compile(Handlebars.java:500)
        at com.github.jknack.handlebars.Handlebars.compile(Handlebars.java:481)
        at io.swagger.codegen.v3.templates.HandlebarTemplateEngine.getHandlebars(HandlebarTemplateEngine.java:41)
        at io.swagger.codegen.v3.templates.HandlebarTemplateEngine.getRendered(HandlebarTemplateEngine.java:21)
        at io.swagger.codegen.v3.DefaultGenerator.processTemplateToFile(DefaultGenerator.java:804)
        at io.swagger.codegen.v3.DefaultGenerator.generateApis(DefaultGenerator.java:547)

Reproduce the issue with the provided swagger-codegen-cli command and config.json, then trace template resolution through DefaultGenerator.generateApis and HandlebarTemplateEngine.getHandlebars. Check the reported /handlebars/Java/handlebars/Java/play25/api.mustache lookup; done means the same playWS generation completes for the supplied Petstore OpenAPI document without FileNotFoundException.