Problem on one side

Setting up for the first time on my two sites:

primary: oldschoolgamermagazine.com
secondary: retroarcadehunter.com

On primary – everything tests out just fine.

On my secondary site (the one with only an admin user so far)…. when I go test it comes up with a popup and a RED X “An undefined error occured – please visit the permalinks settings page and try again.”

Log for primary:`2022-06-09 22:59:21 – Info – Renewing token for https://www.retroarcadehunter.com
2022-06-09 22:59:22 – Success – Ping success for action “Login” from https://www.retroarcadehunter.com with remote IP 67.205.62.30 (incoming)
2022-06-09 22:59:24 – Success – Ping success for action “Logout” from https://www.retroarcadehunter.com with remote IP 67.205.62.30 (incoming)
2022-06-09 22:59:25 – Success – Ping success for action “Create” from https://www.retroarcadehunter.com with remote IP 67.205.62.30 (incoming)
2022-06-09 22:59:27 – Success – Ping success for action “Update” from https://www.retroarcadehunter.com with remote IP 67.205.62.30 (incoming)
2022-06-09 22:59:28 – Success – Ping success for action “Delete” from https://www.retroarcadehunter.com with remote IP 67.205.62.30 (incoming)
2022-06-09 22:59:31 – Success – Ping success for action “Password” from https://www.retroarcadehunter.com with remote IP 67.205.62.30 (incoming)
2022-06-09 22:59:32 – Success – Ping success for action “Roles” from https://www.retroarcadehunter.com with remote IP 67.205.62.30 (incoming)
2022-06-09 22:59:33 – Success – Ping success for action “Metadata” from https://www.retroarcadehunter.com with remote IP 67.205.62.30 (incoming)
2022-06-09 22:59:35 – Success – Ping success for action “Login” from https://www.retroarcadehunter.com with remote IP 67.205.62.30 (outgoing)
2022-06-09 22:59:37 – Success – Ping success for action “Logout” from https://www.retroarcadehunter.com with remote IP 67.205.62.30 (outgoing)
2022-06-09 22:59:38 – Success – Ping success for action “Create” from https://www.retroarcadehunter.com with remote IP 67.205.62.30 (outgoing)
2022-06-09 22:59:40 – Success – Ping success for action “Update” from https://www.retroarcadehunter.com with remote IP 67.205.62.30 (outgoing)
2022-06-09 22:59:41 – Success – Ping success for action “Delete” from https://www.retroarcadehunter.com with remote IP 67.205.62.30 (outgoing)
2022-06-09 22:59:42 – Success – Ping success for action “Password” from https://www.retroarcadehunter.com with remote IP 67.205.62.30 (outgoing)
2022-06-09 22:59:43 – Success – Ping success for action “Roles” from https://www.retroarcadehunter.com with remote IP 67.205.62.30 (outgoing)
2022-06-09 22:59:47 – Success – Ping success for action “Metadata” from https://www.retroarcadehunter.com with remote IP 67.205.62.30 (outgoing)
2022-06-09 23:01:56 – Success – Ping success for action “Login” from https://www.retroarcadehunter.com with remote IP 67.205.62.30 (incoming)
2022-06-09 23:01:57 – Success – Ping success for action “Logout” from https://www.retroarcadehunter.com with remote IP 67.205.62.30 (incoming)
2022-06-09 23:01:58 – Success – Ping success for action “Create” from https://www.retroarcadehunter.com with remote IP 67.205.62.30 (incoming)
2022-06-09 23:01:59 – Success – Ping success for action “Logout” from https://www.retroarcadehunter.com with remote IP 67.205.62.30 (outgoing)
2022-06-09 23:02:00 – Success – Ping success for action “Login” from https://www.retroarcadehunter.com with remote IP 67.205.62.30 (outgoing)
2022-06-09 23:15:01 – Info – Renewing token for https://www.retroarcadehunter.com
2022-06-09 23:15:03 – Success – Ping success for action “Login” from https://www.retroarcadehunter.com with remote IP 67.205.62.30 (incoming)
2022-06-09 23:16:51 – Success – Ping success for action “Logout” from https://www.retroarcadehunter.com with remote IP 67.205.62.30 (incoming)
2022-06-09 23:16:52 – Success – Ping success for action “Create” from https://www.retroarcadehunter.com with remote IP 67.205.62.30 (incoming)
2022-06-09 23:16:53 – Success – Ping success for action “Login” from https://www.retroarcadehunter.com with remote IP 67.205.62.30 (outgoing)
2022-06-09 23:16:55 – Success – Ping success for action “Logout” from https://www.retroarcadehunter.com with remote IP 67.205.62.30 (outgoing)
2022-06-09 23:16:55 – Success – Ping success for action “Create” from https://www.retroarcadehunter.com with remote IP 67.205.62.30 (outgoing)`

Log for secondary:

2022-06-09 22:51:59 - Success - Access granted - https://www.oldschoolgamermagazine.com
2022-06-09 22:51:59 - Info - Token created: site https://retroarcadehunter.com - action "Login"
2022-06-09 22:51:59 - Warning - Ping received for deactivated action "Login" from https://www.oldschoolgamermagazine.com with remote IP 67.205.62.30 (incoming)
2022-06-09 22:59:21 - Info - Token created: site https://www.retroarcadehunter.com - action "Login"
2022-06-09 22:59:22 - Success - Access granted - https://www.oldschoolgamermagazine.com
2022-06-09 22:59:22 - Success - Ping received for activated action "Login" from https://www.oldschoolgamermagazine.com with remote IP 67.205.62.30 (incoming)
2022-06-09 22:59:24 - Success - Access granted - https://www.oldschoolgamermagazine.com
2022-06-09 22:59:24 - Success - Ping received for activated action "Logout" from https://www.oldschoolgamermagazine.com with remote IP 67.205.62.30 (incoming)
2022-06-09 22:59:25 - Success - Access granted - https://www.oldschoolgamermagazine.com
2022-06-09 22:59:25 - Success - Ping received for activated action "Create" from https://www.oldschoolgamermagazine.com with remote IP 67.205.62.30 (incoming)
2022-06-09 22:59:27 - Success - Access granted - https://www.oldschoolgamermagazine.com
2022-06-09 22:59:27 - Success - Ping received for activated action "Update" from https://www.oldschoolgamermagazine.com with remote IP 67.205.62.30 (incoming)
2022-06-09 22:59:28 - Success - Ping received for activated action "Delete" from https://www.oldschoolgamermagazine.com with remote IP 67.205.62.30 (incoming)
2022-06-09 22:59:28 - Success - Access granted - https://www.oldschoolgamermagazine.com
2022-06-09 22:59:30 - Success - Access granted - https://www.oldschoolgamermagazine.com
2022-06-09 22:59:30 - Success - Ping received for activated action "Password" from https://www.oldschoolgamermagazine.com with remote IP 67.205.62.30 (incoming)
2022-06-09 22:59:32 - Success - Access granted - https://www.oldschoolgamermagazine.com
2022-06-09 22:59:32 - Success - Ping received for activated action "Roles" from https://www.oldschoolgamermagazine.com with remote IP 67.205.62.30 (incoming)
2022-06-09 22:59:33 - Success - Access granted - https://www.oldschoolgamermagazine.com
2022-06-09 22:59:33 - Success - Ping received for activated action "Metadata" from https://www.oldschoolgamermagazine.com with remote IP 67.205.62.30 (incoming)
2022-06-09 22:59:35 - Success - Access granted - https://www.oldschoolgamermagazine.com
2022-06-09 22:59:35 - Success - Ping received for activated action "Login" from https://www.oldschoolgamermagazine.com with remote IP 67.205.62.30 (outgoing)
2022-06-09 22:59:37 - Success - Access granted - https://www.oldschoolgamermagazine.com
2022-06-09 22:59:37 - Success - Ping received for activated action "Logout" from https://www.oldschoolgamermagazine.com with remote IP 67.205.62.30 (outgoing)
2022-06-09 22:59:38 - Success - Access granted - https://www.oldschoolgamermagazine.com
2022-06-09 22:59:38 - Success - Ping received for activated action "Create" from https://www.oldschoolgamermagazine.com with remote IP 67.205.62.30 (outgoing)
2022-06-09 22:59:40 - Success - Access granted - https://www.oldschoolgamermagazine.com
2022-06-09 22:59:40 - Success - Ping received for activated action "Update" from https://www.oldschoolgamermagazine.com with remote IP 67.205.62.30 (outgoing)
2022-06-09 22:59:41 - Success - Access granted - https://www.oldschoolgamermagazine.com
2022-06-09 22:59:41 - Success - Ping received for activated action "Delete" from https://www.oldschoolgamermagazine.com with remote IP 67.205.62.30 (outgoing)
2022-06-09 22:59:42 - Success - Access granted - https://www.oldschoolgamermagazine.com
2022-06-09 22:59:42 - Success - Ping received for activated action "Password" from https://www.oldschoolgamermagazine.com with remote IP 67.205.62.30 (outgoing)
2022-06-09 22:59:43 - Success - Access granted - https://www.oldschoolgamermagazine.com
2022-06-09 22:59:43 - Success - Ping received for activated action "Roles" from https://www.oldschoolgamermagazine.com with remote IP 67.205.62.30 (outgoing)
2022-06-09 22:59:47 - Success - Access granted - https://www.oldschoolgamermagazine.com
2022-06-09 22:59:47 - Success - Ping received for activated action "Metadata" from https://www.oldschoolgamermagazine.com with remote IP 67.205.62.30 (outgoing)
2022-06-09 23:01:56 - Success - Ping received for activated action "Login" from https://www.oldschoolgamermagazine.com with remote IP 67.205.62.30 (incoming)
2022-06-09 23:01:56 - Success - Access granted - https://www.oldschoolgamermagazine.com
2022-06-09 23:01:57 - Success - Access granted - https://www.oldschoolgamermagazine.com
2022-06-09 23:01:57 - Success - Ping received for activated action "Logout" from https://www.oldschoolgamermagazine.com with remote IP 67.205.62.30 (incoming)
2022-06-09 23:01:58 - Success - Access granted - https://www.oldschoolgamermagazine.com
2022-06-09 23:01:58 - Success - Ping received for activated action "Create" from https://www.oldschoolgamermagazine.com with remote IP 67.205.62.30 (incoming)
2022-06-09 23:01:59 - Success - Access granted - https://www.oldschoolgamermagazine.com
2022-06-09 23:01:59 - Success - Ping received for activated action "Logout" from https://www.oldschoolgamermagazine.com with remote IP 67.205.62.30 (outgoing)
2022-06-09 23:02:00 - Success - Access granted - https://www.oldschoolgamermagazine.com
2022-06-09 23:02:00 - Success - Ping received for activated action "Login" from https://www.oldschoolgamermagazine.com with remote IP 67.205.62.30 (outgoing)
2022-06-09 23:15:02 - Info - Token created: site https://www.retroarcadehunter.com - action "Login"
2022-06-09 23:15:03 - Success - Access granted - https://www.oldschoolgamermagazine.com
2022-06-09 23:15:03 - Success - Ping received for activated action "Login" from https://www.oldschoolgamermagazine.com with remote IP 67.205.62.30 (incoming)