Help i am getting error in 7.0.9 while installing Fetal error

Getting error  Fatal error: Call to a member function getRow() on a non-object in /home/love2rul/public_html/inc/utils.inc.php on line 421

while installing

Debug backtrace:

Array
(
    [1] => Array
        (
            [file] => /home/love2rul/public_html/inc/classes/BxDolDb.php
            [line] => 82
            [function] => error
            [class] => BxDolDb
            [object] => BxDolDb Object
                (
                    [error_checking] => 1
                    [error_message] => 
                    [host] => localhost
                    [port] => 
                    [socket] => 
                    [dbname] => love2rul_dolp419
                    [user] => *****
                    [password] => *****
                    [link] => 
                    [current_res] => 
                    [current_arr_type] => 1
                    [oParams] => 
                    [oDbCacheObject] => 
                    [_error] => 
                )

            [type] => ->
            [args] => Array
                (
                    [0] => Database connect failed
                    [1] => 1
                )

        )

    [2] => Array
        (
            [file] => /home/love2rul/public_html/inc/classes/BxDolDb.php
            [line] => 58
            [function] => connect
            [class] => BxDolDb
            [object] => BxDolDb Object
                (
                    [error_checking] => 1
                    [error_message] => 
                    [host] => localhost
                    [port] => 
                    [socket] => 
                    [dbname] => love2rul_dolp419
                    [user] => *****
                    [password] => *****
                    [link] => 
                    [current_res] => 
                    [current_arr_type] => 1
                    [oParams] => 
                    [oDbCacheObject] => 
                    [_error] => 
                )

            [type] => ->
            [args] => Array
                (
                )

        )

    [3] => Array
        (
            [file] => /home/love2rul/public_html/inc/db.inc.php
            [line] => 25
            [function] => BxDolDb
            [class] => BxDolDb
            [object] => BxDolDb Object
                (
                    [error_checking] => 1
                    [error_message] => 
                    [host] => localhost
                    [port] => 
                    [socket] => 
                    [dbname] => love2rul_dolp419
                    [user] => *****
                    [password] => *****
                    [link] => 
                    [current_res] => 
                    [current_arr_type] => 1
                    [oParams] => 
                    [oDbCacheObject] => 
                    [_error] => 
                )

            [type] => ->
            [args] => Array
                (
                )

        )

    [4] => Array
        (
            [file] => /home/love2rul/public_html/inc/classes/BxDolAlerts.php
            [line] => 20
            [args] => Array
                (
                    [0] => /home/love2rul/public_html/inc/db.inc.php
                )

            [function] => require_once
        )

    [5] => Array
        (
            [file] => /home/love2rul/public_html/inc/header.inc.php
            [line] => 177
            [args] => Array
                (
                    [0] => /home/love2rul/public_html/inc/classes/BxDolAlerts.php
                )

            [function] => require_once
        )

    [6] => Array
        (
            [file] => /home/love2rul/public_html/index.php
            [line] => 40
            [args] => Array
                (
                    [0] => /home/love2rul/public_html/inc/header.inc.php
                )

            [function] => require_once
        )

)

Called script: /index.php
Request parameters:

Array
(
    [ZSID1] => 000c0f3eabeae0a729b63366de0780c47d31f8fb
)

Dolphin can't connect to the database.  Check the database information.  This can also happen if the database connection keeps getting dropped.

Edit: Also make sure the database user has full permissions for the database. 

its just error in dolphin. my mybb forum not showing any error check https://knightserves.org/forum

Did you check what I wrote about above?

i install it with softaculous so i think all are correct

If it was one of those automated installs, then I'm not sure. 

 Does it mean that problem cannot be solved??

No, it means I don't know.  But I wouldn't be against checking the database information, still.

can you correct it for me if i give you details of cpanel??

I can look into it, sure.  You can send me a message. 

 i am not a advance member and cannot message you

Check your messages. 

 What to do now