Multisite install error with the wp-json route?

I installed it on multisite and it installed fine, but when I create new board and other things I get error notifications.
In the console it shows the following:

Failed to load resource: the server responded with a status of 500 ()

/site1/wp-json/fluent-boards/v2/projects?order=created_at&orderBy=DESC&per_page=100&page=1&searchInput=&option=active&query_timestamp=1740192979701:1

           Failed to load resource: the server responded with a status of 500 ()

2app.js?ver=1.41:2 Error: Missing required param "id"

    at Object.stringify (app.js?ver=1.41:2:871799)

    at Object.resolve (app.js?ver=1.41:2:874972)

    at y (app.js?ver=1.41:2:3155134)

    at N (app.js?ver=1.41:2:3155943)

    at Object.V [as push] (app.js?ver=1.41:2:3155631)

    at Proxy.goToBoard (app.js?ver=1.41:2:2509089)

    at app.js?ver=1.41:2:2509444

    at t.1431.n.<computed>.n.<computed> (app.js?ver=1.41:2:3258831)

    at st (app.js?ver=1.41:2:3182364)

    at ct (app.js?ver=1.41:2:3182441)

(anonymous) @ app.js?ver=1.41:2

/site1/wp-json/fluent-boards/v2/projects/recent-boards?query_timestamp=1740192992891:1

           Failed to load resource: the server responded with a status of 500 ()

load-scripts.php?c=1&load%5Bchunk_0%5D=jquery-core,jquery-migrate,utils,moxiejs,plupload&ver=6.6.2:2

           GET https://staging1.domain.com/site1/wp-json/fluent-boards/v2/projects/2?query_timestamp=1740193253073 500 (Internal Server Error)

send @ load-scripts.php?c=1&load%5Bchunk_0%5D=jquery-core,jquery-migrate,utils,moxiejs,plupload&ver=6.6.2:2

ajax @ load-scripts.php?c=1&load%5Bchunk_0%5D=jquery-core,jquery-migrate,utils,moxiejs,plupload&ver=6.6.2:2

(anonymous) @ load-scripts.php?c=1&load%5Bchunk_0%5D=jquery-core,jquery-migrate,utils,moxiejs,plupload&ver=6.6.2:5

(anonymous) @ load-scripts.php?c=1&load%5Bchunk_0%5D=jquery-core,jquery-migrate,utils,moxiejs,plupload&ver=6.6.2:5

(anonymous) @ app.js?ver=1.41:2

$De @ app.js?ver=1.41:2

get @ app.js?ver=1.41:2

fetchBoardById @ app.js?ver=1.41:2

(anonymous) @ app.js?ver=1.41:2

u @ app.js?ver=1.41:2

(anonymous) @ app.js?ver=1.41:2

(anonymous) @ app.js?ver=1.41:2

Nre @ app.js?ver=1.41:2

i @ app.js?ver=1.41:2

(anonymous) @ app.js?ver=1.41:2

(anonymous) @ app.js?ver=1.41:2

mounted @ app.js?ver=1.41:2

(anonymous) @ app.js?ver=1.41:2

st @ app.js?ver=1.41:2

ct @ app.js?ver=1.41:2

(anonymous) @ app.js?ver=1.41:2

St @ app.js?ver=1.41:2

Mt @ app.js?ver=1.41:2

Promise.then

wt @ app.js?ver=1.41:2

xt @ app.js?ver=1.41:2

cn @ app.js?ver=1.41:2

k @ app.js?ver=1.41:2

S @ app.js?ver=1.41:2

M @ app.js?ver=1.41:2

Ae @ app.js?ver=1.41:2

set value @ app.js?ver=1.41:2

$ @ app.js?ver=1.41:2

(anonymous) @ app.js?ver=1.41:2

Promise.then

N @ app.js?ver=1.41:2

V @ app.js?ver=1.41:2

(anonymous) @ app.js?ver=1.41:2

Promise.then

createBoard @ app.js?ver=1.41:2

onClick.t.<computed>.t.<computed> @ app.js?ver=1.41:2

st @ app.js?ver=1.41:2

ct @ app.js?ver=1.41:2

n @ app.js?ver=1.41:2

load-scripts.php?c=1&load%5Bchunk_0%5D=jquery-core,jquery-migrate,utils,moxiejs,plupload&ver=6.6.2:2

           GET https://staging1.domain.com/site1/wp-json/fluent-boards/v2/projects/recent-boards?query_timestamp=1740193254329 500 (Internal Server Error)