A NoMethodError occurred in sip_callbacks#create:

 undefined method `split' for nil:NilClass
 app/controllers/twilio/sip_callbacks_controller.rb:7:in `create'


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Request:
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 * URL        : https://www.bikelink.org/twilio/sip_callbacks.xml?callerId=+16288000843
 * HTTP Method: POST
 * IP address : 184.23.19.33
 * Parameters : {"callerId"=>" 16288000843", "controller"=>"twilio/sip_callbacks", "action"=>"create", "format"=>"xml"}
 * Timestamp  : 2021-06-22 17:42:57 UTC
 * Server : www-3.internal.bikelink.org
   * Rails root : /var/www/bikelink
 * Process: 13341

-------------------------------
Session:
-------------------------------

 * session id: [FILTERED]
 * data: {}

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Backtrace:
-------------------------------

 app/controllers/twilio/sip_callbacks_controller.rb:7:in `create'