Emailtemplate-addon install failed

Cuba: 7.1.4
emailtemplate-addon: 1.3.0
Hi:

after i installed emailtemplate-addon from the plugin-market. the whole project
goes wrong:

  1. missing javax reference in global entity class:
    image

  2. gradle task: cannot infer argument types:
    image

Thanks

(windows) change java version from 13 to 11 is ok.