I have been playing normally for three days before this
do you get any error messages when you get booted back to the login screen?
You can try with repairing the EasyAntiCheat tool: Go to wherever you installed Albion Online and then run the EasyAntiCheat_Setup.exe and use it's repair function.
possibly an interrupted connection, i find albion doesnt recheck connection enough when my internet drops for 5 seconds im force logged out often when zoning, black screen then log out. but can immediately relog because connection is still there just missed some packets