Thanks for the quick response, however, the downgrade has an unfortunate side effect:
19:C 28 Dec 2022 15:05:32.627 # oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo
19:C 28 Dec 2022 15:05:32.628 # Redis version=6.2.6, bits=64, commit=00000000, modified=0, pid=19, just started
19:C 28 Dec 2022 15:05:32.628 # Configuration loaded
19:M 28 Dec 2022 15:05:32.628 * monotonic clock: POSIX clock_gettime
19:M 28 Dec 2022 15:05:32.629 * Running mode=standalone, port=6379.
19:M 28 Dec 2022 15:05:32.629 # Server initialized
19:M 28 Dec 2022 15:05:32.629 # WARNING overcommit_memory is set to 0! Background save may fail under low memory condition. To fix this issue add 'vm.overcommit_memory = 1' to /etc/sysctl.conf and then reboot or run the command 'sysctl vm.overcommit_memory=1' for this to take effect.
19:M 28 Dec 2022 15:05:32.630 # Can't handle RDB format version 10
19:M 28 Dec 2022 15:05:32.630 # Fatal error loading the DB: Invalid argument. Exiting.
Since this was just a staging environment I just moved the dump.rdb somewhere else and let redis create a new db.
It worked, but I’m not sure whether that’s generally advisable.