[Evolution] Evolution Reports Many Errors

[Jonathan Ryshpan <jonrysh pacbell net>]

Since switched recently from POP to IMAP for retrieving mail, evolution has been reporting a large number of errors, typically about 4 per day. In general, these errors don't seem to be real, in particular the "Empty cache file" reported below is not empty and the "message ID"s with problems all seem to be on the system (see below); though I don't know what the missing "tmp file" messages are about.

Does anyone know what's going in? Is it anything to worry about? Is there any obvious problem to be fixed?

Here's my log of errors for the last few days:

2017-11-09 about 5:00pm

Error while Downloading new messages for offline mode in “Pacbell IMAP : Trash”.

Cannot get message with message ID 1672831: No such message available.

2017-11-09 about 6:50pm

Error while performing operation.

Cannot get message with message ID 1672845: No such message available.

2017-11-09 about 11:00pm

Error while Downloading new messages for offline mode in “Pacbell IMAP : Trash”.

Empty cache file: /home/jonrysh/.cache/evolution/mail/1487186821.3385.16@amito/folders/Trash/cur/22/1672862

2017-11-09 about 11:00pm

Error while Downloading new messages for offline mode in “Pacbell IMAP : Trash”.

Failed to copy the tmp file: No such file or directory

2017-11-10 about 8:40pm

Error while Downloading new messages for offline mode in “Pacbell IMAP : Trash”.

Cannot get message with message ID 1672933: No such message available.

2017-11-11 about 7:00am

Error while Downloading new messages for offline mode in “Pacbell IMAP : Trash”.

Cannot get message with message ID 1673280: No such message available.

2017-11-11 about 11:25am

Error while Downloading new messages for offline mode in “Pacbell IMAP : Trash”.

Cannot get message with message ID 1673301: No such message available.

2017-11-11 about 4:25am

Error while Downloading new messages for offline mode in “Pacbell IMAP : Trash”.

Failed to copy the tmp file: No such file or directory

And an attempt to find messages for the "missing ID"s:

$ locate 1672831

/home/jonrysh/.cache/evolution/mail/1487186821.3385.16@amito/folders/INBOX/cur/1f/1672831

/home/jonrysh/.cache/evolution/mail/1487186821.3385.16@amito/folders/Trash/cur/1f/1672831

$ locate 1672845

/home/jonrysh/.cache/evolution/mail/1487186821.3385.16@amito/folders/INBOX/cur/20/1672845

/home/jonrysh/.cache/evolution/mail/1487186821.3385.16@amito/folders/Trash/cur/20/1672845

$ locate 1672933

/home/jonrysh/.cache/evolution/mail/1487186821.3385.16@amito/folders/INBOX/cur/01/1672933

/home/jonrysh/.cache/evolution/mail/1487186821.3385.16@amito/folders/Trash/cur/01/1672933

$ locate 1673280

/home/jonrysh/.cache/evolution/mail/1487186821.3385.16@amito/folders/INBOX/cur/3b/1673280

$ locate 1673301

/home/jonrysh/.cache/evolution/mail/1487186821.3385.16@amito/folders/INBOX/cur/15/1673301

Thanks - jon