cannot compile code with esp32 Bluetooth code. issue with esp32BLUEUtilities

[imranabeel]

C:\Program Files\PictoBlox\resources\arduino-1.8.5\hardware\espressif\esp32\libraries\esp32BLEUtilities\esp32BLEUtilities.cpp: In member function 'void Esp32ble::begin(std::__cxx11::string)':
C:\Program Files\PictoBlox\resources\arduino-1.8.5\hardware\espressif\esp32\libraries\esp32BLEUtilities\esp32BLEUtilities.cpp:155:3: error: 'bleServer' was not declared in this scope
bleServer = BLEDevice::createServer();
^
C:\Program Files\PictoBlox\resources\arduino-1.8.5\hardware\espressif\esp32\libraries\esp32BLEUtilities\esp32BLEUtilities.cpp:162:3: error: 'bleTxCharacteristic' was not declared in this scope
bleTxCharacteristic = bleService->createCharacteristic(
^
C:\Program Files\PictoBlox\resources\arduino-1.8.5\hardware\espressif\esp32\libraries\esp32BLEUtilities\esp32BLEUtilities.cpp: In member function 'void Esp32ble::write(uint8_t)':
C:\Program Files\PictoBlox\resources\arduino-1.8.5\hardware\espressif\esp32\libraries\esp32BLEUtilities\esp32BLEUtilities.cpp:199:5: error: 'bleTxCharacteristic' was not declared in this scope
bleTxCharacteristic->setValue(&a, 1);
^
C:\Program Files\PictoBlox\resources\arduino-1.8.5\hardware\espressif\esp32\libraries\esp32BLEUtilities\esp32BLEUtilities.cpp: At global scope:
C:\Program Files\PictoBlox\resources\arduino-1.8.5\hardware\espressif\esp32\libraries\esp32BLEUtilities\esp32BLEUtilities.cpp:206:3: error: expected unqualified-id before 'if'
if (!isDeviceConnected && prevDeviceConnected)
^
C:\Program Files\PictoBlox\resources\arduino-1.8.5\hardware\espressif\esp32\libraries\esp32BLEUtilities\esp32BLEUtilities.cpp:215:1: error: expected declaration before '}' token
}
^
exit status 1

While if i copy code and program using Arduino ide it work perfectly.