fresh install from github repo -
this shows up when trying to add a fb account.
adding the fb app as a SERVICE ENDPOINT seems to work

PAGE NOT FOUND
The requested page "/fluxservice/oauth/fluxfacebook/70eac2c3-a98a-4ab3-9b49-da73c6d54eda?code=AQBhA8JgSnjjaDleZh-Rw-ILb3xfw2L-YwGSXfHeglv2y-b1T2t1RS8YAtjr4BitPdjkevDK2R1nJ5SvXbjW021JnpPhFGXJN0Y40kclk1A8SdjAaTzhwB1QqA4wEPKugaqjaBB8GGnT5c3VoZU1HQ8gKC2n7USL2C_0SJVWVd6C0HkjnGKCySjmQ7J6gwg6F5tAgawA7Lc1UGR3PwdoBSo-pe3Uj56__liHNRbSpLHvkCx6IN7g6OXBzv1lsS7MIi_xEmMHDSyaXX2mEEi_XDWx9Jk6TYPm0Xt0fCrFoQhBiODGJfKWno0_r1ixs1tZX_c&state=pyqlKta7GMb3TUjTXT3lzRO80-JM1sdjtvs6r7ZQ6Tk" could not be found.

Comments

hmmm, interesting, I really can't reproduce this...