Lua malfunction on a certain configuration

work_dir = "/var/tarantool_box4.1"
pid_file = "pid"
snap_dir = "snaps"
wal_dir = "xlogs"

log_level = 4

slab_alloc_arena = 1
rows_per_wal = 500000

local_hot_standby = true

slab_alloc_minimal = 48

# Growth factor, each subsecuent unit size is factor * prev unit size
slab_alloc_factor = 1.04

space[0].enabled = 1

space[0].index[0].type = "HASH"
space[0].index[0].unique = 1
space[0].index[0].key_field[0].type = "STR"
space[0].index[0].key_field[0].fieldno = 0

space[0].index[1].type = "TREE"

space[0].index[1].unique = 0
space[0].index[1].key_field[0].type = "STR"
space[0].index[1].key_field[0].fieldno = 1
###################################################

space[46] = {
        enabled = 1
        index = [{
            type = "HASH"
            unique = 1
            key_field = [{
                 fieldno = 0
                 type = "NUM"
            }]
        }]
}
space[47] = {
    enabled = 1
    index = [{
        type="HASH"
        unique = 1
        Key_field = [{
            fieldno = 0
            type = "NUM64"
        }]
    },{
        type="TREE"
        unique = 0
        Key_field = [{
            fieldno = 1
            type = "NUM"
        }]
    },{
        type="TREE"
        unique = 0
        Key_field = [{
            fieldno = 2
            type = "NUM"
        }]
    }]
}

space[48] = {
    enabled = 1
    index = [{
        type="HASH"
        unique = 1
        Key_field = [{
            fieldno = 0
            type = "NUM"
        }]
    },{
        type="TREE"
        unique=0
        Key_field = [{
            fieldno = 1
            type = "NUM"
        }]
    },

        {
            type="HASH"
        unique = 1
            Key_field = [{
                   fieldno = 2
                   type = "STR"
            }]
        },{
            type="TREE"
            unique = 0
            key_field = [{
                   fieldno = 3
                   type = "NUM"
            }]
        },{
        type="TREE"
            unique = 0
            key_field = [{
           fieldno = 4
                   type = "NUM"
            }]
        },{
            type="TREE"
           unique = 0
            key_field = [{
           fieldno = 5
                   type = "NUM"
            }]
    }
        ]

}
space[50] = {
    enabled = 1
    index = [{
        type="HASH"
        unique = 1
        Key_field = [{
            fieldno = 0
            type = "NUM"
        }]
    }]
}

#SecretKeyVideoBox
space[53] = {
        enabled = 1
        index = [{
                type = "HASH"
                unique = 1
                key_field = [{
                        fieldno = 0
                        type= "NUM"
                }]
        }]
}
wal_fsync_delay = 0.1
io_collect_interval = 0.001
logger_nonblock = true
coredump = true
snap_io_rate_limit = 50.0