When xCode is compiled, this error is prompted, how to solve it?

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#1,072 opened on Apr 21, 2019 4 comments 0 reactions 0 assignees View on GitHub

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bug help wanted

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Description

![image](https://user-images.githubusercontent.com/6883210/56471191-2de4b480-6482-11e9-9acd-1a437500fb99.png)

Contributor guide

Open the contributing guide

First steps

Read the whole issue, then the project's contributing guide.
Comment on the issue to say you are picking it up — it saves two people doing the same work.
Fork the repository and make your change on a branch.
Open a pull request that references the issue number.

Research direction

The report provides only a screenshot and does not name a source file, test, or specific build error. Start by inspecting the attached image and reproducing the Xcode compilation failure in the MacDown project; the issue is done when the cause is identified and the project compiles successfully.

Written by the indexing model from the issue text.

Assessment

Tech stack: macos, objective-c
Domain: build-system
Issue type: Bug
Difficulty: 4/5
Estimated time: 3-5 days
Activity status: Stale
Clarity: Needs clarification
Newbie friendliness: 20/100