java.lang.NullPointerException: Attempt to invoke interface method 'java.lang.String com.sash.chat.interfacer.Manager.signUpUser(java.lang.String, java.lang.String, java.lang.String)' on a null object reference

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Attempt to invoke interface method 'java.lang.String com.sash.chat.interfacer.Manager.signUpUser(java.lang.String, java.lang.String, java.lang.String)' on a null object reference
java.lang.NullPointerException: Attempt to invoke interface method 'java.lang.String com.sash.chat.interfacer.Manager.signUpUser(java.lang.String, java.lang.String, java.lang.String)' on a null object reference
at com.sash.chat.SigningUp$2.run(SigningUp.java:129)

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