Couldn't Start Dropbox

Even after reinstalling the App repeated times, I am getting this error.  The app is not starting at all.

Getting message to contact Dropbox support :

bn.BUILD_KEY: Dropbox
bn.VERSION: 183.3.6931
bn.constants.WINDOWS_SHELL_EXT_VERSION: 65
bn.is_frozen: True
machine_id: 81d597da-7af1-4987-aba8-ee658985a154
pid: 10368
cwd: 'C:\\Program Files (x86)\\Dropbox\\Update\\1.3.761.1'
real_path='C:\\Program Files (x86)\\Dropbox\\Update\\1.3.761.1'
mode=0o40777 uid=0 gid=0
parent mode=0o40777 uid=0 gid=0
HOME: None
appdata: 'C:\\Users\\**\\AppData\\Local\\Dropbox\\instance1'
real_path='C:\\Users\\**\\AppData\\Local\\Dropbox\\instance1'
mode=0o40777 uid=0 gid=0
parent mode=0o40777 uid=0 gid=0
dropbox_path: 'C:\\Users\\**\\OneDrive\\Documents\\Dropbox'
real_path='C:\\Users\\**\\OneDrive\\Documents\\Dropbox'
mode=0o40777 uid=0 gid=0
parent mode=0o40555 uid=0 gid=0
sys_executable: 'C:\\Program Files (x86)\\Dropbox\\Client\\Dropbox.exe'
real_path='C:\\Program Files (x86)\\Dropbox\\Client\\Dropbox.exe'
mode=0o100777 uid=0 gid=0
parent mode=0o40777 uid=0 gid=0
trace.__file__: 'C:\\Program Files (x86)\\Dropbox\\Client\\183.3.6931\\python-packages.zip\\dropbox\\client\\ui\\common\\boot_error.pyc'
real_path='C:\\Program Files (x86)\\Dropbox\\Client\\183.3.6931\\python-packages.zip\\dropbox\\client\\ui\\common\\boot_error.pyc'
not found
parent not found
TMP: C:\Users\sneha\AppData\Local\Temp
TEMP: C:\Users\sneha\AppData\Local\Temp
tempdir: 'C:\\Users\\sneha\\AppData\\Local\\Temp'
real_path='C:\\Users\\sneha\\AppData\\Local\\Temp'
mode=0o40777 uid=0 gid=0
parent mode=0o40777 uid=0 gid=0
Traceback (most recent call last):
File "desktop/dropbox/client/main.py", line 5410, in _setup_root_for_account
File "desktop/dropbox/foundation/futures/basic.py", line 965, in result
File "desktop/dropbox/sync_root/manager.py", line 330, in convert_root
File "desktop/dropbox/sync_root/handlers/windows/cloud_files.py", line 341, in migrate
OSError: [WinError -2147024520] The file is not a cloud file