Pineapple cannot be opened in macOS 10.11.6 because of a problem.

[shyamalschandra]

This happens when I tried to start Pineapple in macOS 10.11.6:

Here are the details:

Dyld Error Message:
  Library not loaded: /usr/local/lib/libwx_osx_cocoau-3.1.dylib
  Referenced from: /Applications/Pineapple.app/Contents/MacOS/Pineapple
  Reason: image not found

Binary Images:
    0x7fff6bd27000 -     0x7fff6bd5ea47  dyld (360.22) <DC81CC9D-651A-3A45-8809-928282052BD3> /usr/lib/dyld
    0x7fff8b2b0000 -     0x7fff8b325fff  com.apple.framework.IOKit (2.0.2 - 1179.50.2) <A509D3AE-9D48-31B7-89C7-326A7A2007B2> /System/Library/Frameworks/IOKit.framework/Versions/A/IOKit
    0x7fff8ed2d000 -     0x7fff8ed2dfff  com.apple.Carbon (154 - 157) <8F6ED602-5943-3E29-A793-BC331E2C183D> /System/Library/Frameworks/Carbon.framework/Versions/A/Carbon
    0x7fff9093a000 -     0x7fff9093bffb  libSystem.B.dylib (1226.10.1) <ECAA07BE-A114-3461-AA13-C57838775FC2> /usr/lib/libSystem.B.dylib
    0x7fff96377000 -     0x7fff96385fff  com.apple.opengl (12.1.0 - 12.1.0) <0718DB60-BA4F-3CF7-A117-10A2515D931F> /System/Library/Frameworks/OpenGL.framework/Versions/A/OpenGL
    0x7fff98b72000 -     0x7fff98b72fff  com.apple.Cocoa (6.11 - 22) <807787AB-D231-3F51-A99B-A9314623C571> /System/Library/Frameworks/Cocoa.framework/Versions/A/Cocoa
    0x7fff99e03000 -     0x7fff99fa9ff7  com.apple.audio.toolbox.AudioToolbox (1.13 - 1.13) <370E95BC-956C-3962-86CC-0A14CF6A0389> /System/Library/Frameworks/AudioToolbox.framework/Versions/A/AudioToolbox

Model: iMac12,2, BootROM IM121.0047.B23, 4 processors, Intel Core i5, 2.7 GHz, 12 GB, SMC 1.72f2
Graphics: AMD Radeon HD 6770M, AMD Radeon HD 6770M, PCIe, 512 MB
Memory Module: BANK 0/DIMM0, 2 GB, DDR3, 1333 MHz, 0x02FE, 0x45424A3230554638424353302D444A2D4620
Memory Module: BANK 1/DIMM0, 2 GB, DDR3, 1333 MHz, 0x02FE, 0x45424A3230554638424353302D444A2D4620
Memory Module: BANK 0/DIMM1, 4 GB, DDR3, 1333 MHz, 0x01BA, -
Memory Module: BANK 1/DIMM1, 4 GB, DDR3, 1333 MHz, 0x01BA, -
AirPort: spairport_wireless_card_type_airport_extreme (0x168C, 0x9A), Atheros 9380: 4.0.74.0-P2P
Bluetooth: Version 4.4.6f1 17910, 3 services, 27 devices, 1 incoming serial ports
Network Service: Ethernet, Ethernet, en0
Serial ATA Device: ST31000528AS, 1 TB
Serial ATA Device: HL-DT-STDVDRW  GA32N
USB Device: USB 2.0 Bus
USB Device: Hub
USB Device: IR Receiver
USB Device: Card Reader
USB Device: USB 2.0 Bus
USB Device: FaceTime HD Camera (Built-in)
USB Device: Hub
USB Device: BRCM2046 Hub
USB Device: Bluetooth USB Host Controller
Thunderbolt Bus: iMac, Apple Inc., 25.1

What should I do to fix the problem?