我有一个长久以来安装的 Discourse，似乎出现了 js 错误。
Uncaught (in promise) TypeError: Cannot set property deleteTopic of [object Object] which has only a getter
at ye (index.js:1641:1)
at y (mixin.js:281:1)
at w.apply (mixin.js:482:1)
at e.proto (core.js:600:1)
at new y (core.js:91:1)
at new e (core.js:371:1)
at e.create (core.js:385:1)
at h.create (index.js:385:1)
at index.js:287:1
at index.js:230:1
at i.lookup (index.js:125:1)
at u.lookup (container_proxy.js:19:1)
at m.s (index.js:2075:1)
at index.js:1310:1
at validator.js:635:1
at pe.get (index.js:1309:1)
at m.r [as topic] (index.js:881:1)
at Te (index.js:1682:1)
at reference.js:164:1
at reference.js:125:1
at validator.js:622:1
at d (reference.js:124:1)
at reference.js:162:1
at reference.js:125:1
at validator.js:622:1
at d (reference.js:124:1)
at De (index.js:1806:1)
at ze.create (index.js:1974:1)
at Object.evaluate (runtime.js:2676:1)
at Object.evaluate (runtime.js:1052:1)
at It.evaluateSyscall (runtime.js:4204:1)
at It.evaluateInner (runtime.js:4175:1)
at It.evaluateOuter (runtime.js:4168:1)
at Wt.next (runtime.js:4999:1)
at Wt._execute (runtime.js:4986:1)
at Wt.execute (runtime.js:4979:1)
at Qt.sync (runtime.js:5046:1)
at hr.anonymous (index.js:4672:1)
at index.js:4934:1
at Nt (runtime.js:4080:1)
at gr._renderRoots (index.js:4916:1)
at gr._renderRootsTransaction (index.js:4960:1)
at gr._renderRoot (index.js:4905:1)
at gr._appendDefinition (index.js:4830:1)
at gr.appendOutletView (index.js:4820:1)
at invoke (backburner.js.js:282:1)
at h.flush (backburner.js.js:197:1)
at p.flush (backburner.js.js:358:1)
at B._end (backburner.js.js:798:1)
at backburner.js.js:523:1
application.js:155 TypeError: r.subscribe is not a function
at d.setupController (topic-from-params.js:94:21)
at d.setup (route.js:444:1)
at o (router_js.js:1544:1)
at s.routeEnteredOrUpdated (router_js.js:1554:1)
at s.setupContexts (router_js.js:1500:1)
at s.finalizeTransition (router_js.js:1408:1)
at router_js.js:1347:1
at _ (rsvp.js:434:1)
at y (rsvp.js:420:1)
at invoke (backburner.js.js:282:1)
at h.flush (backburner.js.js:197:1)
at p.flush (backburner.js.js:358:1)
at B._end (backburner.js.js:798:1)
at backburner.js.js:523:1
error @ application.js:155
router.js:1141 Error while processing route: topic.fromParamsNear r.subscribe is not a function
结果是一系列 js 错误。当我转到某个特定主题时，它只显示错误，一个“出了点问题”的屏幕。
有什么故障排除的建议吗？提前感谢。
你检查过安全模式了吗？