Mods item disapear while ''use'' it

[IRoblix]

i create a forge server, i install mods (optifine and flans mod), i install the mods on the server and on my client but when i take (in creative) a item and i place/use it, it just dissapear. what can i do? the version of minecraft are 1.7.10, and the mods are on 1.7.10.

 

 

heres the recent logs:

2019-03-05-1.log

[DavidM]

1.7.10 is very old and is no longer supported on this forum.

Update to a newer version of minecraft to receive support.

 

http://www.howoldisminecraft1710.today

Edited March 5, 2019 by DavidM

[IRoblix]

if you wanna help me on my server the ip is in the log. but if you wanna join to help i leave in canada so the hours can be differents