Bug: Deactivate card after downloading

runtime-core.esm-bundler.js?9e79:218 Uncaught TypeError: this.$set is not a function
    at Proxy.deactivate (Download.vue?993f:194)
    at onClick (Download.vue?993f:58)
    at callWithErrorHandling (runtime-core.esm-bundler.js?9e79:155)
    at callWithAsyncErrorHandling (runtime-core.esm-bundler.js?9e79:164)
    at HTMLAnchorElement.invoker (runtime-dom.esm-bundler.js?8886:349)
deactivate @ Download.vue?993f:194
onClick @ Download.vue?993f:58
callWithErrorHandling @ runtime-core.esm-bundler.js?9e79:155
callWithAsyncErrorHandling @ runtime-core.esm-bundler.js?9e79:164
invoker @ runtime-dom.esm-bundler.js?8886:349

Todo

• Fix Bug
• Add a test