Raise Spectre disappeared for no reason

When I came into the map, Raise Spectre and Animate Guardian disappeared before I knew it.
If Raise Spectre minion died, he would have revived when he came to the hideout, but he did not revive even when he came to the hideout.
The two minion are mounted on gloves. I thought I might have accidentally taken my gloves and stuck them, and when I summoned the ritual corpse Raise Spectre again and went into the next map, Raise Spectre and Animate Guardian disappeared again.
I'm inquiring because the same situation has occurred twice in a row.
At that time, I used blood vessels to definitely come out of the ritual.
I had a lot of ritual, and this is the first time I've experienced this, but I went through it twice today.
I lost my Perfect Guardian Turtle*2, Perfect Forest Warrior*2, Perfect Warlord, Perfect Hulking Miscreation in ruthless.
I don't know why Raise Spectre and Animate Guardian disappeared.