Sync Restarting Randomly

I'm using the Office version on Outlook on my iMac.  Yesterday, when I open Outlook it presents my folders as normal.  Then while viewing email, all messages in the sync folders disappear and a new sync begins.  I've tried logging completely out of Outlook, restarting the iMac with no change in this behavior.  I also receive some Outlook sync errors on screen.  Here's an error log and thanks for any help.

Outlook for Mac Diagnostic Log
====================================================================
Outlook for Mac 2021 Build: 16.73.23051401
Activation Type: Subscription
License Type: Microsoft 365 Subscription
Activation Domain: sbcglobal.net
App Store SKU: FALSE
Microsoft AutoUpdate Build: 4.59.23051401
Mac OS Version: Version 13.3.1 (a) (Build 22E772610a)
CPU Architecture: Apple Silicon arm64
Audience: Production
AudienceGroup: Production
Channel: CC
ComputerName: [Not Logged]
Current Time Zone: America/Chicago
Device ID: b97d9bd0-ab7f-5061-b04e-66b7d6afb11b
Session ID: 5ed75b35-b6ea-4291-a66c-9bc68941f712
Default ProfileName: [Not Logged]
ProfilePath: [Not Logged]
Proxy Settings:
{
GlobalProxy = {
FTPPassive = 1;
};
en0 = {
FTPPassive = 1;
};
en1 = {
FTPPassive = 1;
};
}
Number of email messages: 14393
Number of folders: 64
Number of reminders: 30
Number of Contacts: 125
Number of Calendar Items: 119
Number of email accounts: 2
Number of LDAP accounts: 0
----------------------------- I M A P ------------------------------
Default Account: TRUE
isAccountMigratedToHx: FALSE
Account Name: [Not Logged]
Account Full Name: [Not Logged]
[Not Logged]@att.net
Email Server: [Not Logged]
Account Uses SSL: TRUE
SMTP Server: [Not Logged]
Authentication ID: [Not Logged]
Account Supports REST: FALSE
Account Setup For REST: FALSE
Folders in Account: 7
Calendars in Account: 0
Reminders in Account: 23
Calendar Items in Account: 32
----------------------------- I M A P ------------------------------
----------------------------- I M A P ------------------------------
Default Account: FALSE
isAccountMigratedToHx: FALSE
Account Name: [Not Logged]
Account Full Name: [Not Logged]
[Not Logged]@sbcglobal.net
Email Server: [Not Logged]
Account Uses SSL: TRUE
SMTP Server: [Not Logged]
Authentication ID: [Not Logged]
Account Supports REST: FALSE
Account Setup For REST: FALSE
Folders in Account: 9
Calendars in Account: 0
Reminders in Account: 2
Calendar Items in Account: 2
----------------------------- I M A P ------------------------------
Default application for calendar items: TRUE
Default application for contact items: TRUE
Default application for message items: TRUE
Default application for note items: TRUE
Default application for task items: TRUE