Trouble synchronizing

Hi, created a new NextCloud server and trying to upload/sync files to it (less than 6GB)

The NextCloud client would occasionally give me “No connection to Nextcloud at https://. Operation canceled”

The server and the client are on the same corporate network and, as far as I can tell, nginx service is still running fine on the server.

Logging tells me the following, but I don’t know what to make of it. Yes, I know it says something about the network, but, I think it’s unlikely.

I have moved all of my files back to the original server for now.

Any thoughts/suggestions is greatly appreciated.

Fatal webdav Sabre\DAV\Exception\BadRequest: Expected filesize of 2410500 bytes but read (from Nextcloud client) and wrote (to Nextcloud storage) 671744 bytes. Could either be a network problem on the sending side or a problem writing to the storage on the server side.
/var/www/nextcloud/apps/dav/lib/Connector/Sabre/Directory.php - line 156:

OCA\DAV\Connector\Sabre\File->put(null)

/var/www/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php - line 1096:

OCA\DAV\Connector\Sabre\Directory->createFile(“2019-08-13 07-29-08-1.JPG”, null)

/var/www/nextcloud/3rdparty/sabre/dav/lib/DAV/CorePlugin.php - line 525:

Sabre\DAV\Server->createFile(“files/nsu/S … G”, null, null)

<>

Sabre\DAV\CorePlugin->httpPut(Sabre\HTTP\R … "}, Sabre\HTTP\Response {})

/var/www/nextcloud/3rdparty/sabre/event/lib/EventEmitterTrait.php - line 105:

call_user_func_array([ Sabre\DAV\ … "], [ Sabre\HTTP … }])

/var/www/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php - line 479:

Sabre\Event\EventEmitter->emit(“method:PUT”, [ Sabre\HTTP … }])

/var/www/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php - line 254:

Sabre\DAV\Server->invokeMethod(Sabre\HTTP\R … "}, Sabre\HTTP\Response {})

/var/www/nextcloud/apps/dav/lib/Server.php - line 317:

Sabre\DAV\Server->exec()

/var/www/nextcloud/apps/dav/appinfo/v2/remote.php - line 35:

OCA\DAV\Server->exec()

/var/www/nextcloud/remote.php - line 163:

require_once("/var/www/ne … p")