Password rule error

Question

The entered password is consistent with the verification password, but the status is displayed as -1, and the password rule is wrong

'name|username'=>'require|length:5,20|chsAlphaNum' , 'email|mailbox'=>'require|email|unique:ch_user', 'mobile|mobile phone'=>'require|mobile|unique:ch_user', 'password|password'=>'require|length: 6,20|alPhaNum|confirm'