TypeError: Cannot read property 'number' of null

[shussain-20]

When running my app.js file, everything will run smoothly for about 10 minutes (without making and functions run) then this error will occur and crash it:

web3-provider-engine has some error, that I saw was found in some other truffle npm packages. They were resolved, but not here =[

C:\Users\Pronto\Documents\GitHub\remove-firebase\node_modules\truffle-privatekey-provider\node_modules\web3-provider-engine\index.js:219
number: ethUtil.toBuffer(jsonBlock.number),
^

TypeError: Cannot read property 'number' of null
at toBufferBlock (C:\Users\Pronto\Documents\GitHub\remove-firebase\node_modules\truffle-privatekey-provider\node_modules\web3-provider-engine\index.js:219:50)
at C:\Users\Pronto\Documents\GitHub\remove-firebase\node_modules\truffle-privatekey-provider\node_modules\web3-provider-engine\index.js:60:27
at C:\Users\Pronto\Documents\GitHub\remove-firebase\node_modules\truffle-privatekey-provider\node_modules\web3-provider-engine\index.js:136:12
at C:\Users\Pronto\Documents\GitHub\remove-firebase\node_modules\truffle-privatekey-provider\node_modules\web3-provider-engine\index.js:199:9
at C:\Users\Pronto\Documents\GitHub\remove-firebase\node_modules\async\internal\once.js:12:16
at replenish (C:\Users\Pronto\Documents\GitHub\remove-firebase\node_modules\async\internal\eachOfLimit.js:61:25)
at C:\Users\Pronto\Documents\GitHub\remove-firebase\node_modules\async\internal\eachOfLimit.js:71:9
at eachLimit (C:\Users\Pronto\Documents\GitHub\remove-firebase\node_modules\async\eachLimit.js:43:36)
at C:\Users\Pronto\Documents\GitHub\remove-firebase\node_modules\async\internal\doLimit.js:9:16
at end (C:\Users\Pronto\Documents\GitHub\remove-firebase\node_modules\truffle-privatekey-provider\node_modules\web3-provider-engine\index.js:176:5)
at Request._callback (C:\Users\Pronto\Documents\GitHub\remove-firebase\node_modules\truffle-privatekey-provider\node_modules\web3-provider-engine\subproviders\rpc.js:64:5)
at Request.self.callback (C:\Users\Pronto\Documents\GitHub\remove-firebase\node_modules\request\request.js:185:22)
at Request.emit (events.js:310:20)
at Request. (C:\Users\Pronto\Documents\GitHub\remove-firebase\node_modules\request\request.js:1154:10)
at Request.emit (events.js:310:20)
at IncomingMessage. (C:\Users\Pronto\Documents\GitHub\remove-firebase\node_modules\request\request.js:1076:12)
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! [email protected] start: node index.js
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the [email protected] start script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR! C:\Users\Pronto\AppData\Roaming\npm-cache_logs\2020-08-22T00_48_56_835Z-debug.log

[shussain-20]

cannot read property 'number' in jsonBlock.number?