Looks to be same error
pi@raspberrypi:/opt/MMDVM_Bridge $ sudo apt install -f
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
Use 'sudo apt autoremove' to remove them.
0 upgraded, 0 newly installed, 0 to remove and 4 not upgraded.
1 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Setting up mmdvm-bridge (1.5-20200427-24) ...
Error, APRS_Hosts.txt file does not seem to be valid
dpkg: error processing package mmdvm-bridge (--configure):
subprocess installed post-installation script returned error exit status 251
Errors were encountered while processing:
E: Sub-process /usr/bin/dpkg returned an error code (1)