Error: "Cannot read property 'split' of null"

[oynek]

I really don't know what happened but since yesterday my Foscam IP camera is not working anymore. I noticed that I did not get snapshots so I restarted Homebridge with following result:

[2017-11-8 11:13:27] FoscamAccessory configured with oynek 192.168.1.50 88 3
[2017-11-8 11:13:27] Initializing platform accessory 'Foscam oynek'...
[2017-11-8 11:24:48] [Foscam] Foscam Camera Info: { result: 0,                                                                                              
  productName: 'FI9831W',                                                                                                                                   
  serialNo: '',                                                                                                                                             
  devName: 'FI9831W',                                                                                                                                       
  mac: 'C4D65537XXXX',                                                                                                                                      
  year: 2017,                                                                                                                                               
  mon: 11,                                                                                                                                                  
  day: 8,                                                                                                                                                   
  hour: 12,                                                                                                                                                 
  min: 24,                                                                                                                                                  
  sec: 46,                                                                                                                                                  
  timeZone: -3600,                                                                                                                                          
  firmwareVer: '2.11.2.8',                                                                                                                                  
  hardwareVer: '1.4.1.9' } rtsp://oynek:[email protected]:88/videoMain rtsp://oynek:[email protected]:88/videoSub                       
(node:14) UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 1): TypeError: Cannot read property 'split' of null                  
(node:14) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate t
he Node.js process with a non-zero exit code.

Any ideas?