[Bug] I am not able to add or rename the LAN Party

[0xmex]

Docker image information

[<system> lanager-docker-compose]# docker images zeropingheroes/lanager
REPOSITORY               TAG       IMAGE ID       CREATED       SIZE
zeropingheroes/lanager   develop   1b07d902aa8e   3 weeks ago   197MB
[<system> lanager-docker-compose]#

Bug description
After getting the login working in #175 I cannot add or rename the LAN party. Only deleting is possible. Before that I've renamed the location. Resulting in this message without any valid log entry in lanager container:

Internal Server Error
The server encountered an unexpected condition which prevented it from fulfilling the request.

The db also hasn't any log entry mentioning any error.

Reproduction steps

1. Set up a fresh LANager install
2. Rename the location and give it a address (without country name - but is the same even mit Country Name)
3. Try to rename the example lan or try to create a new one

Expected behavior
Error message as seen above

[ilumos]

Hey there, please can you edit your .env file and change APP_DEBUG to true and paste the exception details here. Thanks

[0xmex]

Will do tomorrow or Monday if ok?

[sgcgoliath]

Same here. All other menus work. But not the LANs one.