breaking nodebb!

[sohrabafard]

nodebb version: 1.5.3
when a user want to submit a new post we have this error ( server-side error)

26/8 01:39:19 [30335] - error:  TypeError: callFn.apply is not a function
    at /home/nodeBB/forum/node_modules/async/dist/async.js:421:16
    at next (/home/nodeBB/forum/node_modules/async/dist/async.js:5278:29)
    at /home/nodeBB/forum/node_modules/async/dist/async.js:906:16
    at /home/nodeBB/forum/src/topics/unread.js:146:5
    at nextTask (/home/nodeBB/forum/node_modules/async/dist/async.js:5273:14)
    at next (/home/nodeBB/forum/node_modules/async/dist/async.js:5280:9)
    at /home/nodeBB/forum/node_modules/async/dist/async.js:906:16
    at fireFilterHook (/home/nodeBB/forum/src/plugins/hooks.js:112:11)
    at Object.Plugins.fireHook (/home/nodeBB/forum/src/plugins/hooks.js:96:4)
    at /home/nodeBB/forum/src/topics/unread.js:138:13
    at nextTask (/home/nodeBB/forum/node_modules/async/dist/async.js:5273:14)
    at next (/home/nodeBB/forum/node_modules/async/dist/async.js:5280:9)
    at /home/nodeBB/forum/node_modules/async/dist/async.js:906:16
    at /home/nodeBB/forum/node_modules/async/dist/async.js:421:16
    at next (/home/nodeBB/forum/node_modules/async/dist/async.js:5278:29)
    at /home/nodeBB/forum/node_modules/async/dist/async.js:906:16