"critical errors" in classic microsoft exchange backend (browser)

this is an issue for years, but I never had to do much with these systems, so now it starts to annoy:

chrome web session, the "classic" exchange admin center brings this error on almost every page. reloading the page fixes it, but it's a bit annoying:


the error report:

==
Client Information
------------------
User Agent: Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.111 Safari/537.36
CPU Class: undefined
Platform: Win32
System Language: undefined
User Language: en-US
CookieEnabled: true
-----------------
Exception Details
-----------------
Date: Tue Jun 15 2021 09:39:54 GMT+0200 (Central European Summer Time)
Message: Script error.
Url:
Line: 0

Call Stack
----------
Error
at Function.ErrorHandling.$Ee (https://exchange2016/ecp/15.1.1466.3/scripts/common.js:1:189941)
at ErrorHandling.showUnhandledException (https://exchange2016/ecp/15.1.1466.3/scripts/common.js:1:189026)




Dump Event
----------
isTrusted = true
message = Script error.
filename =
lineno = 0
colno = 0
error = null
type = error
target = [object Window]
currentTarget = [object Window]
eventPhase = 2
bubbles = false
cancelable = true
defaultPrevented = false
composed = false
timeStamp = 1038.040000014007
srcElement = [object Window]
returnValue = true
cancelBubble = false
path = [object Window]
NONE = 0
CAPTURING_PHASE = 1
AT_TARGET = 2
BUBBLING_PHASE = 3
composedPath = function composedPath() { [native code] }
initEvent = function initEvent() { [native code] }
preventDefault = function preventDefault() { [native code] }
stopImmediatePropagation = function stopImmediatePropagation() { [native code] }
stopPropagation = function stopPropagation() { [native code] }

Detailed Call Stack
-------------------
==
change sessions (edge/iexplore) brings different problems, so I would prefer to find a solution for the chrome session..