err network changed error

For the last 3 days when i turn on or restart my pc i get the following on screen when opening google chrome...... ERR network changed error ...... if i wait a few seconds the report goes of screen and my opening page appears as normal..... i have not changed any settings myself..... i have pressed reset on my bt home hub 4 and also typed flushed dns into command modual.....

so my question is .... why has this suddenly started to happen.