目前使用如下方式报错： [图片][图片]

实时数据总是报以下错误. 是由于网络问题造成的吗? 有什么解法? Error: errCode: -402004 realtime listener rebuild watch fail | errMsg: Error: query event cache timeout (rebuildWatch requestId 1571124955751_0.4731700562044896) at new u (https://lib/WASubContext.js:1:100461) at o (https://lib/WASubContext.js:1:337252) at Object.onTimeoutError (https://lib/WASubContext.js:1:337759) at Ei.handleCommonError (https://lib/WASubContext.js:1:341546) at Ei.(https://lib/WASubContext.js:1:337642) at https://lib/WASubContext.js:1:96167 at Object.next (https://lib/WASubContext.js:1:96272) at https://lib/WASubContext.js:1:95210 at new Promise () at l (https://lib/WASubContext.js:1:94989) Error: errCode: -402002 realtime listener init watch fail | errMsg: Error: SIGN_EXPIRED_ERROR sign expired (initWatch requestId 1571582784623_0.7682918740646201) at new u (WASubContext.js:1:99266) at o (WASubContext.js:1:336057) at i (WASubContext.js:1:336437) at Ei.<anonymous> (WASubContext.js:1:337386) at WASubContext.js:1:94972 at Object.next (WASubContext.js:1:95077) at n (WASubContext.js:1:93848) Error: errCode: -402010 realtime listener check last fail | errMsg: Error: invalid state: ws connection not exists, can not send message at new u (WASubContext.js:1:99266) at Ei.<anonymous> (WASubContext.js:1:339824) at WASubContext.js:1:94972 at Object.throw (WASubContext.js:1:95077) at r (WASubContext.js:1:93899)