使用iOS阿里云播放器SDK，点进去后直播未开启出现错误：-[NSPlaceholderString initWithString:]: nil argument-问答-阿里云开发者社区-阿里云

* -[NSPlaceholderString initWithString:]: nil argument
(

0   CoreFoundation                      0x1c94ce0f <redacted> + 154
1   libobjc.A.dylib                     0x1bbaf077 objc_exception_throw + 38
2   CoreFoundation                      0x1c94cd3d <redacted> + 0
3   Foundation                          0x1d1c68e5 <redacted> + 94
4   AliyunPlayerSDK                     0x0105260f -[InformationReport urlEncode:] + 174
5   AliyunPlayerSDK                     0x0105273d -[InformationReport constructPublicParam] + 180
6   AliyunPlayerSDK                     0x01054ca1 -[InformationReport sendHeartBeat:timerInterval:] + 68
7   AliyunPlayerSDK                     0x0104eb89 -[AliVcMediaPlayer timerHeartbreak:] + 332
8   Foundation                          0x1d299ef9 __NSFireTimer + 62
9   CoreFoundation                      0x1c908de7 <redacted> + 14
10  CoreFoundation                      0x1c908ab9 <redacted> + 896
11  CoreFoundation                      0x1c908471 <redacted> + 220
12  CoreFoundation                      0x1c906755 <redacted> + 1364
13  CoreFoundation                      0x1c855533 CFRunLoopRunSpecific + 486
14  CoreFoundation                      0x1c855341 CFRunLoopRunInMode + 104
15  GraphicsServices                    0x1e02cbfd GSEventRunModal + 156
16  UIKit                               0x21a63e27 <redacted> + 574
17  UIKit                               0x21a5e551 UIApplicationMain + 150
18  STDAuction                          0x00102413 main + 106
19  libdyld.dylib                       0x1c01f50b <redacted> + 2

)

找了n久的bug，发现了这个问题，是不是AliyunPlayerSDK内部有问题，需要怎么解决？