Use wkwebview error

Code:

  B4i version: 2.51
Parsing code.    (0.00s)
Compiling code.    (0.03s)
Compiling layouts code.    (0.00s)
Compiling debugger engine code.    (1.86s)
Building Xcode project    (0.03s)
Sending data to remote compiler.    Error
Out: Build settings from command line:
    ARCHS = armv7
    CODE_SIGN_IDENTITY = iPhone
    CONFIGURATION_BUILD_DIR = /Users/dengjie/Downloads/macserver/UploadedProjects/<user id>/Payload
    OTHER_CODE_SIGN_FLAGS = --keychain <user id>
    PRODUCT_NAME = B4i...  

Use wkwebview error

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