authentication Error

The SMTP debugging output is shown below:
2017-01-23 11:33:12 Connection: opening to ssl://smtp.gmail.com:465, timeout=300, options=array (
)
2017-01-23 11:33:12 Connection: opened
2017-01-23 11:33:12 SMTP -> get_lines(): $data is “”
2017-01-23 11:33:12 SMTP -> get_lines(): $str is “220 smtp.gmail.com ESMTP m136sm4643817pga.22 – gsmtp
”
2017-01-23 11:33:12 SERVER -> CLIENT: 220 smtp.gmail.com ESMTP m136sm4643817pga.22 – gsmtp
2017-01-23 11:33:12 CLIENT -> SERVER: EHLO magnumforce.co
2017-01-23 11:33:12 SMTP -> get_lines(): $data is “”
2017-01-23 11:33:12 SMTP -> get_lines(): $str is “250-smtp.gmail.com at your service, [205.186.180.18]
”
2017-01-23 11:33:12 SMTP -> get_lines(): $data is “250-smtp.gmail.com at your service, [205.186.180.18]
”
2017-01-23 11:33:12 SMTP -> get_lines(): $str is “250-SIZE 35882577
”
2017-01-23 11:33:12 SMTP -> get_lines(): $data is “250-smtp.gmail.com at your service, [205.186.180.18]
250-SIZE 35882577
”
2017-01-23 11:33:12 SMTP -> get_lines(): $str is “250-8BITMIME
”
2017-01-23 11:33:12 SMTP -> get_lines(): $data is “250-smtp.gmail.com at your service, [205.186.180.18]
250-SIZE 35882577
250-8BITMIME
”
2017-01-23 11:33:12 SMTP -> get_lines(): $str is “250-AUTH LOGIN PLAIN XOAUTH2 PLAIN-CLIENTTOKEN OAUTHBEARER XOAUTH
”
2017-01-23 11:33:12 SMTP -> get_lines(): $data is “250-smtp.gmail.com at your service, [205.186.180.18]
250-SIZE 35882577
250-8BITMIME
250-AUTH LOGIN PLAIN XOAUTH2 PLAIN-CLIENTTOKEN OAUTHBEARER XOAUTH
”
2017-01-23 11:33:12 SMTP -> get_lines(): $str is “250-ENHANCEDSTATUSCODES
”
2017-01-23 11:33:12 SMTP -> get_lines(): $data is “250-smtp.gmail.com at your service, [205.186.180.18]
250-SIZE 35882577
250-8BITMIME
250-AUTH LOGIN PLAIN XOAUTH2 PLAIN-CLIENTTOKEN OAUTHBEARER XOAUTH
250-ENHANCEDSTATUSCODES
”
2017-01-23 11:33:12 SMTP -> get_lines(): $str is “250-PIPELINING
”
2017-01-23 11:33:12 SMTP -> get_lines(): $data is “250-smtp.gmail.com at your service, [205.186.180.18]
250-SIZE 35882577
250-8BITMIME
250-AUTH LOGIN PLAIN XOAUTH2 PLAIN-CLIENTTOKEN OAUTHBEARER XOAUTH
250-ENHANCEDSTATUSCODES
250-PIPELINING
”
2017-01-23 11:33:12 SMTP -> get_lines(): $str is “250-CHUNKING
”
2017-01-23 11:33:12 SMTP -> get_lines(): $data is “250-smtp.gmail.com at your service, [205.186.180.18]
250-SIZE 35882577
250-8BITMIME
250-AUTH LOGIN PLAIN XOAUTH2 PLAIN-CLIENTTOKEN OAUTHBEARER XOAUTH
250-ENHANCEDSTATUSCODES
250-PIPELINING
250-CHUNKING
”
2017-01-23 11:33:12 SMTP -> get_lines(): $str is “250 SMTPUTF8
”
2017-01-23 11:33:12 SERVER -> CLIENT: 250-smtp.gmail.com at your service, [205.186.180.18]
250-SIZE 35882577
250-8BITMIME
250-AUTH LOGIN PLAIN XOAUTH2 PLAIN-CLIENTTOKEN OAUTHBEARER XOAUTH
250-ENHANCEDSTATUSCODES
250-PIPELINING
250-CHUNKING
250 SMTPUTF8
2017-01-23 11:33:12 Auth method requested: UNKNOWN
2017-01-23 11:33:12 Auth methods available on the server: LOGIN,PLAIN,XOAUTH2,PLAIN-CLIENTTOKEN,OAUTHBEARER,XOAUTH
2017-01-23 11:33:12 Auth method selected: LOGIN
2017-01-23 11:33:12 CLIENT -> SERVER: AUTH LOGIN
2017-01-23 11:33:12 SMTP -> get_lines(): $data is “”
2017-01-23 11:33:12 SMTP -> get_lines(): $str is “334 VXNlcm5hbWU6
”
2017-01-23 11:33:12 SERVER -> CLIENT: 334 VXNlcm5hbWU6
2017-01-23 11:33:12 CLIENT -> SERVER: YW5raXQuaXNwYWNlQGdtYWlsLmNvbQ==
2017-01-23 11:33:12 SMTP -> get_lines(): $data is “”
2017-01-23 11:33:12 SMTP -> get_lines(): $str is “334 UGFzc3dvcmQ6
”
2017-01-23 11:33:12 SERVER -> CLIENT: 334 UGFzc3dvcmQ6
2017-01-23 11:33:12 CLIENT -> SERVER: QW5raXRAMTIz
2017-01-23 11:33:13 SMTP -> get_lines(): $data is “”
2017-01-23 11:33:13 SMTP -> get_lines(): $str is “534-5.7.14 get_lines(): $data is “534-5.7.14 get_lines(): $str is “534-5.7.14 rEI_qj6xANhcTD4sugvPTrbL1HOsOlrahJXvrXmDR4FQWffNKh0ITjbuhXpkNalBatyaFD
”
2017-01-23 11:33:13 SMTP -> get_lines(): $data is “534-5.7.14 get_lines(): $str is “534-5.7.14 HLjYh2e2HEchVJw7NEfJ2jdmMcnf7eJhZGjvm_ryQjG4OkB4_kGlRi6oyH2-TUzBeTatpJ
”
2017-01-23 11:33:13 SMTP -> get_lines(): $data is “534-5.7.14 get_lines(): $str is “534-5.7.14 xTSoDjsXfbhyRv4mgLTNoWW2pwaZ9aKNGvP4sCs4-mpN78UVrJBFdxIW5OwV3jwcuzStWy
”
2017-01-23 11:33:13 SMTP -> get_lines(): $data is “534-5.7.14 get_lines(): $str is “534-5.7.14 2Ee9z-HjD_O_0yv8ioyy8w-_cYm8k> Please log in via your web browser and
”
2017-01-23 11:33:13 SMTP -> get_lines(): $data is “534-5.7.14 Please log in via your web browser and
”
2017-01-23 11:33:13 SMTP -> get_lines(): $str is “534-5.7.14 then try again.
”
2017-01-23 11:33:13 SMTP -> get_lines(): $data is “534-5.7.14 Please log in via your web browser and
534-5.7.14 then try again.
”
2017-01-23 11:33:13 SMTP -> get_lines(): $str is “534-5.7.14 Learn more at
”
2017-01-23 11:33:13 SMTP -> get_lines(): $data is “534-5.7.14 Please log in via your web browser and
534-5.7.14 then try again.
534-5.7.14 Learn more at
”
2017-01-23 11:33:13 SMTP -> get_lines(): $str is “534 5.7.14 https://support.google.com/mail/answer/78754 m136sm4643817pga.22 – gsmtp
”
2017-01-23 11:33:13 SERVER -> CLIENT: 534-5.7.14 Please log in via your web browser and
534-5.7.14 then try again.
534-5.7.14 Learn more at
534 5.7.14 https://support.google.com/mail/answer/78754 m136sm4643817pga.22 – gsmtp
2017-01-23 11:33:13 SMTP ERROR: Password command failed: 534-5.7.14 Please log in via your web browser and
534-5.7.14 then try again.
534-5.7.14 Learn more at
534 5.7.14 https://support.google.com/mail/answer/78754 m136sm4643817pga.22 – gsmtp
2017-01-23 11:33:13 SMTP Error: Could not authenticate.
2017-01-23 11:33:13 CLIENT -> SERVER: QUIT
2017-01-23 11:33:13 SMTP -> get_lines(): $data is “”
2017-01-23 11:33:13 SMTP -> get_lines(): $str is “221 2.0.0 closing connection m136sm4643817pga.22 – gsmtp
”
2017-01-23 11:33:13 SERVER -> CLIENT: 221 2.0.0 closing connection m136sm4643817pga.22 – gsmtp
2017-01-23 11:33:13 Connection: closed
2017-01-23 11:33:13 SMTP Error: Could not authenticate.