Internal server error for GET /schoolclasses

[TomlDev]

┏━━━━━━━━┳━━━━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━┓
┃ Status ┃ Packages               ┃ Version  ┃
┡━━━━━━━━╇━━━━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━┩
│ ii     │ linuxmuster-api7       │ 7.3.18   │
│ ii     │ linuxmuster-base7      │ 7.3.31-0 │
│ ii     │ linuxmuster-cli7       │ 7.3.12   │
│ ii     │ linuxmuster-common     │ 7.3.1-0  │
│ ii     │ linuxmuster-linbo-gui7 │ 7.3.3    │
│ ii     │ linuxmuster-linbo7     │ 4.3.29-0 │
│ ii     │ linuxmuster-prepare    │ 7.3.1-0  │
│ ii     │ linuxmuster-tools7     │ 7.3.31   │
│ ii     │ linuxmuster-webui7     │ 7.3.30   │
│ ii     │ sophomorix-samba       │ 7.3.12   │
└────────┴────────────────────────┴──────────┘

As agy-netzint-teacher I get this error, no matter if I am joined or not:

[kiarn]

Oje ... thanks for the notification, I pushed the last commit too fast. My bad.