Problem Maximum number of concurrent DNS queries reached (max: 150)

Good afternoon,

For several weeks after a pihole update the following message appears to me repeatedly every day:

Does anyone know how I can solve this? Because I don't know what could be causing this nor do I know how to solve it.

I have tried creating the file: 02-custom-settings.conf with the following code, but I think that pihole does not detect it because the message keeps appearing.

EDIT SETTINGS

dns-forward-max=5096
min-cache-ttl=300
rebind-domain-ok=

END EDIT

Can anyone help me fix it? I've been trying for several weeks and I can't find any way to solve it.

Best regards,