Permissions problem when using ruby based snap 'mdl'

Because I don't understand Ruby, but want to use the ruby based program mdl (markdownlint), I have installed it using snap. While I can run the program, if I try and set up a customizations in a ~/.mdlrc file. I get the following error $ mdl README.md /snap/mdl/171/lib/ruby/gems/2.4.0/gems/mixlib-config-3.0.6/lib/mixlib/config.rb:63:in `read': Permission denied @ rb_sysopen - /home/mikeg/.mdlrc (Errno::EACCES) from /snap/mdl/171/lib/ruby/gems/2.4.0/gems/mixlib-config-3.0.6/lib/mixlib/config.rb:63:in `from_file' from /snap/mdl/171/lib/ruby/gems/2.4.0/gems/mdl-0.10.0/lib/mdl/cli.rb:122:in `run' from /snap/mdl/171/lib/ruby/gems/2.4.0/gems/mdl-0.10.0/lib/mdl.rb:16:in `run' from /snap/mdl/171/lib/ruby/gems/2.4.0/gems/mdl-0.10.0/bin/mdl:10:in `' from /snap/mdl/171/bin/mdl:23:in `load' from /snap/mdl/171/bin/mdl:23:in `' I don't understand where the permission issue comes from since $ ls -l ~/.mdlrc ~/.mdlrc.style.rb -rw-rw-r-- 1 mikeg mikeg 171 Aug 14 16:06 /home/mikeg/.mdlrc -rw-rw-r-- 1 mikeg mikeg 4 Aug 14 16:06 /home/mikeg/.mdlrc.style.rb and drwxr-xr-x 303 mikeg mikeg 65536 Aug 14 21:53 /home/mikeg As a result, I can't figure out how to fix this. Can anyone help me. Note that I'm running Mate 18.06. SELinux is not installed, but AppArmor is active and going through my /var/log/syslog* files I get

syslog.7.gz:Aug 17 09:08:40 XXXX kernel: [978608.742842] audit: type=1400 audit(1597669720.954:2800): apparmor="DENIED" operation="open" profile="snap.mdl.mdl" name="/home/mi/.mdlrc" pid=13189 comm="ruby" requested_mask="r" denied_mask="r" fsuid=1000 ouid=1000

Thanks, Mike