Why did the local server stop working on Prepros?

Question

Work organization

good afternoon colleagues.
Please help me solve the problem with my Prepros 6.0
SUBJECT:
This program has a smart LAN connection mode via qr-code.
For several days now, I have not been able to access the page at the given address.
Actually the address 192,168,1,93:5566 is nothing unusual.
QUESTION:
Who faced this problem? What could happen and where to look for a solution?
Thanks in advance for your replies.
PS. The earnest request to avoid "comments" "yuzay galp". The weight of the npm packages I need for work is 5 times the weight of this program, all other things being equal.