TypeError: toAdd.contains is not a function
at virtuallyAddElement (/app/dist/lib/crawl2/dist/sandboxEngine3.5.js:3874:40)
at Tree.copyFromElement (/app/dist/lib/crawl2/dist/sandboxEngine3.5.js:3927:17)
at Object.replaceDOMTree (/app/dist/lib/crawl2/dist/sandboxEngine3.5.js:4342:14)
at Object.replacer (/app/dist/lib/crawl2/dist/sandboxEngine3.5.js:5185:45)
at processNodeWithEngine (/app/dist/lib/crawl2/dist/sandboxEngine3.5.js:3129:42)
at processNode (/app/dist/lib/crawl2/dist/sandboxEngine3.5.js:3334:27)
at afterNode (/app/dist/lib/crawl2/dist/sandboxEngine3.5.js:2685:37)
at domTraverse (/app/dist/lib/crawl2/dist/sandboxEngine3.5.js:2763:25)
at translationReceived (/app/dist/lib/crawl2/dist/sandboxEngine3.5.js:8744:21)
at /app/dist/lib/crawl2/dist/sandboxEngine3.5.js:9534:25