Permission denied when using scp, but able to ssh

I'm trying to copy a file from my local desktop to a remote server.

Yes – the remote directory I want to copy to is set to chmod 777
Yes – the server is password protected, and I am sure I have the right password because I am able to ssh onto the server.

The server is for a Drupal 7 site, I've tried Gitbash and Windows PowerShell, on a Windows 10 system. The server is protected and managed with Cisco Anyconnect and Armor.

I can't figure out what the issue is.. Can anyone offer some guidance?

Thanks!

My debug output (I've swapped the user name for <my-user> and the ip address for xxx.xxx.xx.xx):

PS C:\Users\Jill> scp -v ~/logo.png <my-user>@xxx.xxx.xx.xx:/var/www/html/sites/all/themes/bootstrap/bootstrap_subtheme
Executing: program ssh.exe host xxx.xxx.xx.xx, user <my-user>, command scp -v -t /var/www/html/sites/all/themes/bootstrap/bootstrap_subtheme
OpenSSH_for_Windows_7.6p1, LibreSSL 2.6.4
debug1: Connecting to xxx.xxx.xx.xx [xxx.xxx.xx.xx] port 22.
debug1: Connection established.
debug1: identity file C:\\Users\\Jill/.ssh/id_rsa type 0
debug1: key_load_public: No such file or directory
debug1: identity file C:\\Users\\Jill/.ssh/id_rsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file C:\\Users\\Jill/.ssh/id_dsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file C:\\Users\\Jill/.ssh/id_dsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file C:\\Users\\Jill/.ssh/id_ecdsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file C:\\Users\\Jill/.ssh/id_ecdsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file C:\\Users\\Jill/.ssh/id_ed25519 type -1
debug1: key_load_public: No such file or directory
debug1: identity file C:\\Users\\Jill/.ssh/id_ed25519-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_for_Windows_7.6
debug1: Remote protocol version 2.0, remote software version OpenSSH_5.3
debug1: match: OpenSSH_5.3 pat OpenSSH_5* compat 0x0c000000
debug1: Authenticating to xxx.xxx.xx.xx:22 as '<my-user>'
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: algorithm: diffie-hellman-group-exchange-sha256
debug1: kex: host key algorithm: ssh-rsa
debug1: kex: server->client cipher: aes128-ctr MAC: umac-64@openssh.com compression: none
debug1: kex: client->server cipher: aes128-ctr MAC: umac-64@openssh.com compression: none
debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(2048<3072<8192) sent
debug1: got SSH2_MSG_KEX_DH_GEX_GROUP
debug1: SSH2_MSG_KEX_DH_GEX_INIT sent
debug1: got SSH2_MSG_KEX_DH_GEX_REPLY
debug1: Server host key: ssh-rsa SHA256:5pwb0K9Lm5jDfTygWxEht/0ANL/5/kpCNlZDm/tV3ww
debug1: Host 'xxx.xxx.xx.xx' is known and matches the RSA host key.
debug1: Found key in C:\\Users\\Jill/.ssh/known_hosts:5
debug1: rekey after 4294967296 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: rekey after 4294967296 blocks
debug1: pubkey_prepare: ssh_get_authentication_socket: No such file or directory
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic,password
debug1: Next authentication method: publickey
debug1: Offering public key: RSA SHA256:XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX C:\\Users\\Jill/.ssh/id_rsa
debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic,password
debug1: Trying private key: C:\\Users\\Jill/.ssh/id_dsa
debug1: Trying private key: C:\\Users\\Jill/.ssh/id_ecdsa
debug1: Trying private key: C:\\Users\\Jill/.ssh/id_ed25519
debug1: Next authentication method: password
debug1: read_passphrase: can't open /dev/tty: No such file or directory
offs01admin@xxx.xxx.xx.xx's password:
debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic,password
Permission denied, please try again.
debug1: read_passphrase: can't open /dev/tty: No such file or directory
offs01admin@xxx.xxx.xx.xx's password:
debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic,password
Permission denied, please try again.
debug1: read_passphrase: can't open /dev/tty: No such file or directory
offs01admin@xxx.xxx.xx.xx's password:
debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic,password
debug1: No more authentication methods to try.
offs01admin@xxx.xxx.xx.xx: Permission denied (publickey,gssapi-keyex,gssapi-with-mic,password).
offs01admin@xxx.xxx.xx.xx: Permission denied (publickey,gssapi-keyex,gssapi-with-mic,password).
lost connection