I have a couple of local mailboxes. Importing the emails in those mailboxes to EagleFiler does not work as I am getting "EagleFiler cannot find the mailbox “nameofmailbox” on disk.

I checked my system.log file. There's obviously something wrong. Maybe you could point me to the problem.

Here's an excerpt of the system.log

Code:
Feb 28 07:14:03 iMac com.apple.xpc.launchd[1] (com.apple.mdworker.single.01000000-0000-0000-0000-000000000000): Service only ran for 1 seconds. Pushing respawn out by 9 seconds.
Feb 28 07:14:06 iMac com.apple.xpc.launchd[1] (org.postfix.master[90052]): Service exited with abnormal code: 1
Feb 28 07:14:06 iMac com.apple.xpc.launchd[1] (org.postfix.master): Service only ran for 1 seconds. Pushing respawn out by 9 seconds.
Feb 28 07:14:06 iMac com.apple.xpc.launchd[1] (com.apple.postfix.master[90053]): Service exited with abnormal code: 1
Feb 28 07:14:06 iMac com.apple.xpc.launchd[1] (com.apple.postfix.master): Service only ran for 1 seconds. Pushing respawn out by 9 seconds.
Feb 28 07:14:08 iMac com.apple.xpc.launchd[1] (com.apple.nowplayingtouchui): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Feb 28 07:14:10 iMac diagnosticd[309]: Failed to harvest strings for binary named '–ÿT'
Feb 28 07:14:10 iMac diagnosticd[309]: Failed to harvest strings for binary named ''
Feb 28 07:14:10 iMac diagnosticd[309]: Failed to harvest strings for binary named '–(é'
Feb 28 07:14:10 iMac diagnosticd[309]: Failed to harvest strings for binary named ''
Feb 28 07:14:10 iMac diagnosticd[309]: Failed to harvest strings for binary named '–ÿT'
Feb 28 07:14:10 iMac diagnosticd[309]: Failed to harvest strings for binary named '–hm'
Feb 28 07:14:10 --- last message repeated 1 time ---
Feb 28 07:14:10 iMac diagnosticd[309]: Failed to harvest strings for binary named '–(é'
Feb 28 07:14:10 iMac diagnosticd[309]: Failed to harvest strings for binary named '–ÿT'
Feb 28 07:14:10 iMac diagnosticd[309]: Failed to harvest strings for binary named '–(é'
Feb 28 07:14:16 iMac com.apple.xpc.launchd[1] (com.apple.mdworker.single.08000000-0000-0000-0000-000000000000): Service only ran for 1 seconds. Pushing respawn out by 9 seconds.
Feb 28 07:14:16 iMac Yojimbo[431]: Locked user...
Feb 28 07:14:16 iMac Yojimbo[431]: Checking for updates...
Feb 28 07:14:16 iMac com.apple.xpc.launchd[1] (org.postfix.master[90105]): Service exited with abnormal code: 1
Feb 28 07:14:16 iMac com.apple.xpc.launchd[1] (org.postfix.master): Service only ran for 1 seconds. Pushing respawn out by 9 seconds.
Feb 28 07:14:16 iMac Yojimbo[431]: Saving sync state...
Feb 28 07:14:16 iMac Yojimbo[431]: Saved state with identifier: EE7328EF-D763-4E44-B545-5E0707559FE2
Feb 28 07:14:16 iMac com.apple.xpc.launchd[1] (com.apple.postfix.master[90106]): Service exited with abnormal code: 1
Feb 28 07:14:16 iMac com.apple.xpc.launchd[1] (com.apple.postfix.master): Service only ran for 1 seconds. Pushing respawn out by 9 seconds.
Feb 28 07:14:16 iMac com.apple.xpc.launchd[1] (com.apple.mdworker.single.02000000-0000-0000-0000-000000000000): Service only ran for 1 seconds. Pushing respawn out by 9 seconds.
Feb 28 07:14:16 iMac Yojimbo[431]: Sync ending.
Feb 28 07:14:16 iMac com.apple.xpc.launchd[1] (com.apple.mdworker.single.01000000-0000-0000-0000-000000000000): Service only ran for 4 seconds. Pushing respawn out by 6 seconds.
Feb 28 07:14:17 iMac Yojimbo[431]: Unlocked user...
Feb 28 07:14:18 iMac com.apple.xpc.launchd[1] (com.apple.nowplayingtouchui): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Feb 28 07:14:26 iMac com.apple.xpc.launchd[1] (com.apple.mdworker.single.08000000-0000-0000-0000-000000000000): Service only ran for 1 seconds. Pushing respawn out by 9 seconds.
Feb 28 07:14:26 iMac com.apple.xpc.launchd[1] (com.apple.mdworker.single.01000000-0000-0000-0000-000000000000): Service only ran for 3 seconds. Pushing respawn out by 7 seconds.
Feb 28 07:14:26 iMac com.apple.xpc.launchd[1] (org.postfix.master[90112]): Service exited with abnormal code: 1
Feb 28 07:14:26 iMac com.apple.xpc.launchd[1] (org.postfix.master): Service only ran for 1 seconds. Pushing respawn out by 9 seconds.
Feb 28 07:14:26 iMac com.apple.xpc.launchd[1] (com.apple.postfix.master[90113]): Service exited with abnormal code: 1
Feb 28 07:14:26 iMac com.apple.xpc.launchd[1] (com.apple.postfix.master): Service only ran for 1 seconds. Pushing respawn out by 9 seconds.
Feb 28 07:14:28 iMac com.apple.xpc.launchd[1] (com.apple.nowplayingtouchui): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Thanks a lot for your help.

Best,
Chris