$ epiphany https://youtube.com
Xlib: sequence lost (0x105a0 > 0x5a4) in reply type 0x0!
Xlib: sequence lost (0x10618 > 0x61a) in reply type 0x0!
(WebKitWebProcess:3897): Gdk-ERROR **: The program 'WebKitWebProcess' received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadMatch (invalid parameter attributes)'.
(Details: serial 2441 error_code 8 request_code 156 (GLX) minor_code 34)
(Note to programmers: normally, X errors are reported asynchronously;
that is, you will receive the error a while after causing it.
To debug your program, run it with the GDK_SYNCHRONIZE environment
variable to change this behavior. You can then get a meaningful
backtrace from your debugger if you break on the gdk_x_error() function.)
Xlib: sequence lost (0x10f4a > 0xf4d) in reply type 0x0!
Xlib: sequence lost (0x10f52 > 0xf57) in reply type 0x0!
Xlib: sequence lost (0x10f5a > 0xf5d) in reply type 0x0!