图片选择按钮消失找不到，masonry报错

[TerryAsh]

Base Info for this issue

1. ChatKit Version：0.7.17

2. App-ID: XX

3. Language：Objective-C

4. iOS System Version：iOS10.3

5. Prototype（是否是真机）：YES

6. Issue Type：Bug

1. How to repeat the problem.

打开聊天界面

2. Please help me in this way.

3. Here is a Demo.

4. Here is my Debug log

2017-07-18 15:23:13.139079+0800 FangYou[77652:3172706] [] nw_proxy_resolver_create_parsed_array PAC evaluation error: NSURLErrorDomain: -1004 2017-07-18 15:23:14.378955+0800 FangYou[77652:3171972] [LayoutConstraints] Unable to simultaneously satisfy constraints. Probably at least one of the constraints in the following list is one you don't want. Try this: (1) look at each constraint and try to figure out which you don't expect; (2) find the code that added the unwanted constraint or constraints and fix it. ( "<MASLayoutConstraint:0x6080002a8220 LCCKChatMoreView:0x7fba0455cbd0.top == LCCKChatBar:0x7fba04438710.bottom>", "<MASLayoutConstraint:0x6080002aaaa0 LCCKChatBar:0x7fba04438710.bottom == UIView:0x7fba0454d5f0.bottom>", "<MASLayoutConstraint:0x6080002a0cc0 LCCKChatMoreView:0x7fba0455cbd0.top == UIView:0x7fba0454d5f0.bottom - 210>" )

Will attempt to recover by breaking constraint <MASLayoutConstraint:0x6080002a8220 LCCKChatMoreView:0x7fba0455cbd0.top == LCCKChatBar:0x7fba04438710.bottom>

Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger. The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKit/UIView.h> may also be helpful. 2017-07-18 15:23:40.331 FangYou[77652:3172081] +[LCCKConversationService cacheFileTypeMessages:callback:]_block_invoke [Line 758] download file error : (null) 2017-07-18 15:23:40.332807+0800 FangYou[77652:3172092] [] nw_endpoint_handler_add_write_request [4.1.1 60.217.22.146:80 failed socket-flow (satisfied)] cannot accept write requests 2017-07-18 15:23:40.333285+0800 FangYou[77652:3173276] [] tcp_connection_write_eof_block_invoke Write close callback received error: [22] Invalid argument