Error transferring file to S3

. 2021-07-21 08:42:40.482 HTTP session to https://mybucket.s3.amazonaws.com:443 begins.
. 2021-07-21 08:42:40.482 ssl: SNI enabled by default.
. 2021-07-21 08:42:40.483 Sending request headers:
. 2021-07-21 08:42:40.483 PUT /asde-x-phase-1/2019/slc/Weather/slc20191126.mat HTTP/1.1
 
. 2021-07-21 08:42:40.483 User-Agent: WinSCP/5.19.1 neon/0.31.2
 
. 2021-07-21 08:42:40.483 Keep-Alive: 
 
. 2021-07-21 08:42:40.483 Connection: TE, Keep-Alive
 
. 2021-07-21 08:42:40.483 TE: trailers
 
. 2021-07-21 08:42:40.483 Host: mybucket.s3.amazonaws.com
 
. 2021-07-21 08:42:40.483 Content-Length: 76207
 
. 2021-07-21 08:42:40.483 Authorization: xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
 
. 2021-07-21 08:42:40.483 x-amz-date: 20210721T124240Z
 
. 2021-07-21 08:42:40.483 x-amz-content-sha256: UNSIGNED-PAYLOAD
. 2021-07-21 08:42:40.483 Sending request-line and headers:
. 2021-07-21 08:42:40.483 Doing DNS lookup on atsl-backup.s3.amazonaws.com...
. 2021-07-21 08:42:40.483 req: Connecting to 52.217.104.252:443
. 2021-07-21 08:42:40.490 Doing SSL negotiation.
. 2021-07-21 08:42:40.551 Identity match for 's3.amazonaws.com': good
. 2021-07-21 08:42:40.551 Verifying certificate for "Amazon.com, Inc., Seattle, Washington, US" with fingerprint 62:d4:86:f0:92:a6:1b:63:9d:70:d8:17:89:bb:cd:9e:5d:49:ca:65:9c:2f:a5:82:16:d9:06:d4:e4:cf:4f:d2 and 08 failures
. 2021-07-21 08:42:40.568 Certificate verified against Windows certificate store
. 2021-07-21 08:42:40.568 Using TLSv1.2, cipher TLSv1.2: ECDHE-RSA-AES128-GCM-SHA256, 2048 bit RSA
. 2021-07-21 08:42:40.568 Sending request body:
. 2021-07-21 08:42:40.572 Request sent; retry is 0.
. 2021-07-21 08:42:42.218 [status-line] < HTTP/1.1 500 Internal Server Error
. 2021-07-21 08:42:42.218 Header Name: [x-amz-request-id], Value: [3F7JZ9KPXDFAY6YR]
. 2021-07-21 08:42:42.218 Header Name: [x-amz-id-2], Value: [1oqnYDi2hWAHShn73h0em5u1ivSVvPWDNlSNwmNuDcOc9wiox8WTce8ha2VHfopOIcmMgK3tD7I=]
. 2021-07-21 08:42:42.218 Header Name: [content-type], Value: [application/xml]
. 2021-07-21 08:42:42.218 Header Name: [transfer-encoding], Value: [chunked]
. 2021-07-21 08:42:42.218 Header Name: [date], Value: [Wed, 21 Jul 2021 12:42:42 GMT]
. 2021-07-21 08:42:42.218 Header Name: [server], Value: [AmazonS3]
. 2021-07-21 08:42:42.218 Header Name: [connection], Value: [close]
. 2021-07-21 08:42:42.218 End of headers.
. 2021-07-21 08:42:42.219 End of headers.
. 2021-07-21 08:42:42.219 sess: Closing connection.
. 2021-07-21 08:42:42.219 sess: Connection closed.
. 2021-07-21 08:42:42.219 Request ends, status 500 class 5xx, error line:
. 2021-07-21 08:42:42.219 500 Internal Server Error
. 2021-07-21 08:42:42.219 We encountered an internal error. Please try again.
. 2021-07-21 08:42:42.219 Extra Details: RequestId: 3F7JZ9KPXDFAY6YR, HostId: 1oqnYDi2hWAHShn73h0em5u1ivSVvPWDNlSNwmNuDcOc9wiox8WTce8ha2VHfopOIcmMgK3tD7I=
< 2021-07-21 08:42:42.219 <?xml version="1.0" encoding="UTF-8"?>
< 2021-07-21 08:42:42.219 <Error><Code>InternalError</Code><Message>We encountered an internal error. Please try again.</Message><RequestId>3F7JZ9KPXDFAY6YR</RequestId><HostId>1oqnYDi2hWAHShn73h0em5u1ivSVvPWDNlSNwmNuDcOc9wiox8WTce8ha2VHfopOIcmMgK3tD7I=</HostId></Error>
. 2021-07-21 08:42:42.219 Request ends.
. 2021-07-21 08:42:42.219 sess: Destroying session.
* 2021-07-21 08:42:42.219 (ExtException) **We encountered an internal error. Please try again.**
* 2021-07-21 08:42:42.219 Extra Details: RequestId: 3F7JZ9KPXDFAY6YR, HostId: 1oqnYDi2hWAHShn73h0em5u1ivSVvPWDNlSNwmNuDcOc9wiox8WTce8ha2VHfopOIcmMgK3tD7I=
. 2021-07-21 08:42:42.222 Asking user:
. 2021-07-21 08:42:42.222 Error transferring file 'E:\2019\slc\Weather\slc20191126.mat'. ("We encountered an internal error. Please try again.","Extra Details: RequestId: 3F7JZ9KPXDFAY6YR, HostId: 1oqnYDi2hWAHShn73h0em5u1ivSVvPWDNlSNwmNuDcOc9wiox8WTce8ha2VHfopOIcmMgK3tD7I=")

. 2021-07-21 05:43:19.530 --------------------------------------------------------------------------
. 2021-07-21 05:43:19.530 WinSCP Version 5.19.1 (Build 11552) (OS 10.0.14393 - Windows Server 2016 Standard)
. 2021-07-21 05:43:19.530 Configuration: HKCU\Software\Martin Prikryl\WinSCP 2\
. 2021-07-21 05:43:19.531 Log level: Normal
. 2021-07-21 05:43:19.531 Local account: HOSTID\username
. 2021-07-21 05:43:19.531 Working directory: C:\Program Files (x86)\WinSCP
. 2021-07-21 05:43:19.531 Process ID: 8824
. 2021-07-21 05:43:19.536 Ancestor processes: explorer, userinit
. 2021-07-21 05:43:19.536 Command-line: "C:\Program Files (x86)\WinSCP\WinSCP.exe" 
. 2021-07-21 05:43:19.536 Time zone: Current: GMT-4, Standard: GMT-5 (Eastern Standard Time), DST: GMT-4 (Eastern Daylight Time), DST Start: 3/14/2021, DST End: 11/7/2021
. 2021-07-21 05:43:19.536 Login time: Wednesday, July 21, 2021 5:43:19 AM
. 2021-07-21 05:43:19.536 --------------------------------------------------------------------------
. 2021-07-21 05:43:19.536 Session name: ATSL AWS S3 (Site)
. 2021-07-21 05:43:19.536 Host name: s3.amazonaws.com (Port: 443)
. 2021-07-21 05:43:19.536 User name: MYAWSID (Password: Yes, Key file: No, Passphrase: No)
. 2021-07-21 05:43:19.536 Transfer Protocol: S3
. 2021-07-21 05:43:19.536 Proxy: None
. 2021-07-21 05:43:19.536 HTTPS: Yes
. 2021-07-21 05:43:19.536 S3: URL Style: Virtual Host
. 2021-07-21 05:43:19.536 TLS/SSL versions: TLSv1.0-TLSv1.3
. 2021-07-21 05:43:19.536 Local directory: E:\, Remote directory: /mybucket/asde-x-phase-1, Update: Yes, Cache: Yes
. 2021-07-21 05:43:19.536 Cache directory changes: Yes, Permanent: Yes
. 2021-07-21 05:43:19.536 Recycle bin: Delete to: No, Overwritten to: No, Bin path: 
. 2021-07-21 05:43:19.536 --------------------------------------------------------------------------