Are you using any proxies or fingerprints? Have you tried
reloading the page or using different proxy/fingerprint?
Have you tried loading in regular browsers - chrome/ffox etc?
Can you send test script that reproduces that error or just
post exact web link/address?
I don't know if i'm doing something wrong but if i put inside the "Read file" command an resource file path "lines from file" the function doesn't work
Doing so means that there is path to another file inside your original file.
Just use resource anywhere in your code.
