I have several users reporting this error same error…
User 1, macbook: has error when using monday on his browser, but does NOT have the error when using the PC app.
User 2, windows laptop: has error on both the website and the PC app.
User 3, windows laptop: no error on website or PC app. Also no error on Samsung (android) app.
Here is my troubleshooting checklist for a slow monday account (some could apply in this situation)
contact monday support
do a hard refresh on browser (Ctrl+Shift+R)
click through each board/dashboard/doc and let it load
run a speed test
if you can’t use ethernet make sure you are using the 5GHz channel instead of 2.4GHz, and your wifi adapter is plugged into the USB 3.0 port (if you have one)
clear cache and cookies
use chrome, firefox, safari, or microsoft edge browsers
deactivate any automations that currently aren’t in use
clean up your board data, and delete any redundant columns
upgrade your laptop or PC if its greater than 5 years old, or has very low specs
update your PC/Laptop
update your modem
restart your modem
call your ISP
Consider a server migration if relevant
if all of the above fails then you may have to upgrade to enterprise