@duckymirror It would be interesting to check the local storage. If you install the
nwjs-sdkversion using the link above, it can be accessed as usual from the Developer Console / Application / Local Storage. Try to identify whether there are some items that seem too big and may exceed the allowed capacity.
I am having this same issue as well, and only have 1 private server I connect to (and also 3 community servers + MMO)
Error: Failed to execute 'setItem' on 'Storage': Setting the value of 'local:auth' exceeded the quota.
Looking at the storage, it appears that my current code (main.js) is stored at
users.code.activeWorld, and every single change is logged to
local:users.code.activeWorld I am unsure if this storage is searched, but of the 21 indexes it contains, 14 of them contain 650-700kb of data (main.js)
I hope this information is helpful, if theres anything else I can provide let me know.
EDIT: As suspected, simply deleting the key
local:users.code.activeWorld resolved this issue, however that is just a band-aid.