<br />
<b>Fatal error</b>:  Uncaught Error: Call to a member function using_index_permalinks() on null in /home/ateamext/public_html/wp-includes/rest-api.php:520
Stack trace:
#0 /home/ateamext/public_html/wp-includes/rest-api.php(583): get_rest_url(NULL, '/fluent-smtp/ou...', 'rest')
#1 /home/ateamext/public_html/wp-content/plugins/fluent-smtp/app/Services/Mailer/Providers/Outlook/API.php(90): rest_url('fluent-smtp/out...')
#2 /home/ateamext/public_html/wp-content/plugins/fluent-smtp/app/Services/Mailer/Providers/Outlook/API.php(98): FluentMail\App\Services\Mailer\Providers\Outlook\API-&gt;getRedirectUrl()
#3 /home/ateamext/public_html/wp-content/plugins/fluent-smtp/app/Services/Mailer/Providers/Outlook/API.php(39): FluentMail\App\Services\Mailer\Providers\Outlook\API-&gt;getConfig()
#4 /home/ateamext/public_html/wp-content/plugins/fluent-smtp/app/Services/Mailer/Providers/Outlook/Handler.php(164): FluentMail\App\Services\Mailer\Providers\Outlook\API-&gt;sendTokenRequest('refresh_token', Array)
#5 /home/ateamext/public_html/wp-content/plugins/fluent-smtp/app/Services/Mailer/Providers/Outlook/Handler.php(54): FluentMail\App\Services\Mailer\Providers\Outlook\Handler-&gt;getAccessToken(Array)
#6 /home/ateamext/public_html/wp-content/plugins/fluent-smtp/app/Services/Mailer/Providers/Outlook/Handler.php(26): FluentMail\App\Services\Mailer\Providers\Outlook\Handler-&gt;sendViaApi()
#7 /home/ateamext/public_html/wp-content/plugins/fluent-smtp/app/Services/Mailer/Providers/Outlook/Handler.php(17): FluentMail\App\Services\Mailer\Providers\Outlook\Handler-&gt;postSend()
#8 /home/ateamext/public_html/wp-content/plugins/fluent-smtp/app/Services/Mailer/FluentPHPMailer.php(28): FluentMail\App\Services\Mailer\Providers\Outlook\Handler-&gt;send()
#9 /home/ateamext/public_html/wp-content/plugins/fluent-smtp/app/Functions/helpers.php(621): FluentMail\App\Services\Mailer\FluentPHPMailer-&gt;send()
#10 /home/ateamext/public_html/wp-content/plugins/fluent-smtp/fluent-smtp.php(49): fluentMailSend(Array, 'ateamext.com Da...', '\n&lt;html&gt;\n&lt;head&gt;\n...', Array, Array)
#11 /home/ateamext/public_html/wp-content/plugins/security-malware-firewall/security-malware-firewall.php(1765): wp_mail('admin@ateamext....', 'ateamext.com Da...', '\n&lt;html&gt;\n&lt;head&gt;\n...', Array)
#12 [internal function]: spbc_send_daily_report(Array)
#13 /home/ateamext/public_html/wp-content/plugins/security-malware-firewall/lib/CleantalkSP/Common/Cron.php(121): call_user_func('spbc_send_daily...', Array)
#14 /home/ateamext/public_html/wp-content/plugins/security-malware-firewall/lib/CleantalkSP/Common/Cron.php(54): CleantalkSP\Common\Cron-&gt;runTasks()
#15 /home/ateamext/public_html/wp-content/plugins/security-malware-firewall/security-malware-firewall.php(421): CleantalkSP\Common\Cron-&gt;execute()
#16 /home/ateamext/public_html/wp-settings.php(589): include_once('/home/ateamext/...')
#17 /home/ateamext/public_html/wp-config.php(105): require_once('/home/ateamext/...')
#18 /home/ateamext/public_html/wp-load.php(50): require_once('/home/ateamext/...')
#19 /home/ateamext/public_html/wp-blog-header.php(13): require_once('/home/ateamext/...')
#20 /home/ateamext/public_html/index.php(17): require('/home/ateamext/...')
#21 {main}
  thrown in <b>/home/ateamext/public_html/wp-includes/rest-api.php</b> on line <b>520</b><br />