Problem with json

Hi, every time i’m going to update pages or posts i’ll receive this message (translate): “Update failed. The answer is not a valid JSON answer”.

In console there are the follow errors:

VM4180:1 POST https://www.rivaossigeno.it/wp-json/wp/v2/pages/241?_locale=user 403 (Forbidden) (anonymous) @ VM4180:1 R @ api-fetch.min.js?ver=b437dd9d1118e698b1b85961e759bf03:2 (anonymous) @ api-fetch.min.js?ver=b437dd9d1118e698b1b85961e759bf03:2 (anonymous) @ api-fetch.min.js?ver=b437dd9d1118e698b1b85961e759bf03:2 tryCatch @ wp-polyfill.min.js?ver=7.4.4:1 invoke @ wp-polyfill.min.js?ver=7.4.4:1 t.<computed> @ wp-polyfill.min.js?ver=7.4.4:1 n @ api-fetch.min.js?ver=b437dd9d1118e698b1b85961e759bf03:2 u @ api-fetch.min.js?ver=b437dd9d1118e698b1b85961e759bf03:2 (anonymous) @ api-fetch.min.js?ver=b437dd9d1118e698b1b85961e759bf03:2 (anonymous) @ api-fetch.min.js?ver=b437dd9d1118e698b1b85961e759bf03:2 (anonymous) @ api-fetch.min.js?ver=b437dd9d1118e698b1b85961e759bf03:2 (anonymous) @ api-fetch.min.js?ver=b437dd9d1118e698b1b85961e759bf03:2 H @ api-fetch.min.js?ver=b437dd9d1118e698b1b85961e759bf03:2 (anonymous) @ api-fetch.min.js?ver=b437dd9d1118e698b1b85961e759bf03:2 p @ api-fetch.min.js?ver=b437dd9d1118e698b1b85961e759bf03:2 (anonymous) @ api-fetch.min.js?ver=b437dd9d1118e698b1b85961e759bf03:2 H @ api-fetch.min.js?ver=b437dd9d1118e698b1b85961e759bf03:2 (anonymous) @ api-fetch.min.js?ver=b437dd9d1118e698b1b85961e759bf03:2 (anonymous) @ api-fetch.min.js?ver=b437dd9d1118e698b1b85961e759bf03:2 p @ api-fetch.min.js?ver=b437dd9d1118e698b1b85961e759bf03:2 (anonymous) @ api-fetch.min.js?ver=b437dd9d1118e698b1b85961e759bf03:2 (anonymous) @ api-fetch.min.js?ver=b437dd9d1118e698b1b85961e759bf03:2 t @ api-fetch.min.js?ver=b437dd9d1118e698b1b85961e759bf03:2 (anonymous) @ api-fetch.min.js?ver=b437dd9d1118e698b1b85961e759bf03:2 Q @ api-fetch.min.js?ver=b437dd9d1118e698b1b85961e759bf03:2 (anonymous) @ api-fetch.min.js?ver=b437dd9d1118e698b1b85961e759bf03:2 (anonymous) @ api-fetch.min.js?ver=b437dd9d1118e698b1b85961e759bf03:2 (anonymous) @ api-fetch.min.js?ver=b437dd9d1118e698b1b85961e759bf03:2 (anonymous) @ api-fetch.min.js?ver=b437dd9d1118e698b1b85961e759bf03:2 F @ api-fetch.min.js?ver=b437dd9d1118e698b1b85961e759bf03:2 API_FETCH @ core-data.min.js?ver=30bbd0e8996befdf7ce081c737c9c75c:2 (anonymous) @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 (anonymous) @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 e @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 (anonymous) @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 r.any @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 (anonymous) @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 e @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 (anonymous) @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 (anonymous) @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 e @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 (anonymous) @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 (anonymous) @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 (anonymous) @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 e @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 (anonymous) @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 (anonymous) @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 (anonymous) @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 e @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 (anonymous) @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 (anonymous) @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 (anonymous) @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 e @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 (anonymous) @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 r.any @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 (anonymous) @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 e @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 (anonymous) @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 (anonymous) @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 e @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 (anonymous) @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 r.any @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 (anonymous) @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 e @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 (anonymous) @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 (anonymous) @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 (anonymous) @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 e @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 (anonymous) @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 c @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 t @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 r.iterator @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 (anonymous) @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 e @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 (anonymous) @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 c @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 t @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 (anonymous) @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 (anonymous) @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 (anonymous) @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 (anonymous) @ data.min.js?ver=e80048e7b309581a40e44b8bd8aaba41:2 (anonymous) @ data.min.js?ver=e80048e7b309581a40e44b8bd8aaba41:2 (anonymous) @ data.min.js?ver=e80048e7b309581a40e44b8bd8aaba41:2 s.DISPATCH @ data-controls.min.js?ver=01499e0a61256afb555131b4ed614fed:2 (anonymous) @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 (anonymous) @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 e @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 (anonymous) @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 (anonymous) @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 (anonymous) @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 e @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 (anonymous) @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 (anonymous) @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 (anonymous) @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 e @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 (anonymous) @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 r.any @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 (anonymous) @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 e @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 (anonymous) @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 (anonymous) @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 e @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 (anonymous) @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 Promise.then (async) (anonymous) @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 (anonymous) @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 e @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 (anonymous) @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 (anonymous) @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 (anonymous) @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 e @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 (anonymous) @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 (anonymous) @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 (anonymous) @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 e @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 (anonymous) @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 c @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 t @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 (anonymous) @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 (anonymous) @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 (anonymous) @ redux-routine.min.js?ver=7b7d8224ca3d5f24509583833d71c388:2 (anonymous) @ data.min.js?ver=e80048e7b309581a40e44b8bd8aaba41:2 (anonymous) @ data.min.js?ver=e80048e7b309581a40e44b8bd8aaba41:2 (anonymous) @ editor.min.js?ver=bb928f624169f992ec79a4889c7abf35:12 (anonymous) @ data.min.js?ver=e80048e7b309581a40e44b8bd8aaba41:2 (anonymous) @ data.min.js?ver=e80048e7b309581a40e44b8bd8aaba41:2 (anonymous) @ editor.min.js?ver=bb928f624169f992ec79a4889c7abf35:12 (anonymous) @ editor.min.js?ver=bb928f624169f992ec79a4889c7abf35:12 Vh @ react-dom.min.js?ver=16.9.0:163 Uh @ react-dom.min.js?ver=16.9.0:14 Xh @ react-dom.min.js?ver=16.9.0:14 af @ react-dom.min.js?ver=16.9.0:14 Yh @ react-dom.min.js?ver=16.9.0:164 nd @ react-dom.min.js?ver=16.9.0:15 nc @ react-dom.min.js?ver=16.9.0:15 Of @ react-dom.min.js?ver=16.9.0:38 Ac @ react-dom.min.js?ver=16.9.0:39 unstable_runWithPriority @ react.min.js?ver=16.9.0:26 Ma @ react-dom.min.js?ver=16.9.0:52 Be @ react-dom.min.js?ver=16.9.0:119 xi @ react-dom.min.js?ver=16.9.0:39 Show 111 more frames

Let me know Regards