System error
```
Exception has occurred: SessionNotCreatedException
Message: Expected browser binary location, but unable to find binary in default location, no 'moz:firefoxOptions.binary' capability provided, and no binary flag set on the command line
File "C:\Users\farn\Documents\prgm\TestDragon\Server\clientDownloads\TestDragonzhuweilun204@gmail.com\TestDragonDownload\rootPortable\TestDragonPlayGround\src\CnTestingTask.pyx", line 13381, in __init__
File "C:\Users\farn\Documents\prgm\TestDragon\Server\clientDownloads\TestDragonzhuweilun204@gmail.com\TestDragonDownload\rootPortable\TestDragonPlayGround\src\CnTestingTask.pyx", line 15296, in webDriverManagerFromForum
File "C:\Users\farn\Documents\prgm\TestDragon\Server\clientDownloads\TestDragonzhuweilun204@gmail.com\TestDragonDownload\rootPortable\TestDragonPlayGround\src\CnTestingTask.pyx", line 71250, in start
File "C:\Users\farn\Documents\prgm\TestDragon\Server\clientDownloads\TestDragonzhuweilun204@gmail.com\TestDragonDownload\rootPortable\TestDragonPlayGround\src\CnTestingTask.pyx", line 71189, in __init__
File "C:\Users\farn\Documents\prgm\TestDragon\Server\clientDownloads\TestDragonzhuweilun204@gmail.com\TestDragonDownload\rootPortable\TestDragonPlayGround\src\CnTestingTask.pyx", line 29769, in __init__
File "C:\Users\farn\Documents\prgm\TestDragon\Server\clientDownloads\TestDragonzhuweilun204@gmail.com\TestDragonDownload\rootPortable\TestDragonPlayGround\src\CnTestingTask.pyx", line 39759, in __init__
File "C:\Users\farn\Documents\prgm\TestDragon\Server\clientDownloads\TestDragonzhuweilun204@gmail.com\TestDragonDownload\rootPortable\TestDragonPlayGround\src\CnTestingTask.pyx", line 33578, in startMegaTBot
selenium.common.exceptions.SessionNotCreatedException: Message: Expected browser binary location, but unable to find binary in default location, no 'moz:firefoxOptions.binary' capability provided, and no binary flag set on the command line
```
Terminal info
```
[Thread-7][INFO] ====== WebDriver manager ======
[Thread-7][INFO] Get LATEST geckodriver version for None firefox
[Thread-7][INFO] Getting latest mozilla release info for v0.33.0
[Thread-7][INFO] About to download new driver from https://github.com/mozilla/geckodriver/releases/download/v0.33.0/geckodriver-v0.33.0-win64.zip
[Thread-7][INFO] Driver downloading response is 200
[Thread-7][INFO] Get LATEST geckodriver version for None firefox
[Thread-7][INFO] Get LATEST geckodriver version for None firefox
[Thread-7][INFO] Driver has been saved in cache [C:\Users\zhuweilun\.wdm\drivers\geckodriver\win64\v0.33.0]
```
System error
``` Exception has occurred: SessionNotCreatedException Message: Expected browser binary location, but unable to find binary in default location, no 'moz:firefoxOptions.binary' capability provided, and no binary flag set on the command line File "C:\Users\farn\Documents\prgm\TestDragon\Server\clientDownloads\TestDragonzhuweilun204@gmail.com\TestDragonDownload\rootPortable\TestDragonPlayGround\src\CnTestingTask.pyx", line 13381, in __init__ File "C:\Users\farn\Documents\prgm\TestDragon\Server\clientDownloads\TestDragonzhuweilun204@gmail.com\TestDragonDownload\rootPortable\TestDragonPlayGround\src\CnTestingTask.pyx", line 15296, in webDriverManagerFromForum File "C:\Users\farn\Documents\prgm\TestDragon\Server\clientDownloads\TestDragonzhuweilun204@gmail.com\TestDragonDownload\rootPortable\TestDragonPlayGround\src\CnTestingTask.pyx", line 71250, in start File "C:\Users\farn\Documents\prgm\TestDragon\Server\clientDownloads\TestDragonzhuweilun204@gmail.com\TestDragonDownload\rootPortable\TestDragonPlayGround\src\CnTestingTask.pyx", line 71189, in __init__ File "C:\Users\farn\Documents\prgm\TestDragon\Server\clientDownloads\TestDragonzhuweilun204@gmail.com\TestDragonDownload\rootPortable\TestDragonPlayGround\src\CnTestingTask.pyx", line 29769, in __init__ File "C:\Users\farn\Documents\prgm\TestDragon\Server\clientDownloads\TestDragonzhuweilun204@gmail.com\TestDragonDownload\rootPortable\TestDragonPlayGround\src\CnTestingTask.pyx", line 39759, in __init__ File "C:\Users\farn\Documents\prgm\TestDragon\Server\clientDownloads\TestDragonzhuweilun204@gmail.com\TestDragonDownload\rootPortable\TestDragonPlayGround\src\CnTestingTask.pyx", line 33578, in startMegaTBot selenium.common.exceptions.SessionNotCreatedException: Message: Expected browser binary location, but unable to find binary in default location, no 'moz:firefoxOptions.binary' capability provided, and no binary flag set on the command line ```