reference to property 'dcChat' in closure requires explicit use of 'self' to make capture semantics explicit

Process completed with exit code 65.

ld: linking against a dylib which is not safe for use in application extensions: /Users/runner/Library/Developer/Xcode/DerivedData/deltachat-ios-gzsiwbgaeljpcdhjjykgzhakhhdc/Build/Products/Debug-iphonesimulator/DcCore.framework/DcCore