Pre-synthesis failed.

[wwwenby]

Hello, when i run c synthesis, i get this error:
Pre-synthesis failed.
while executing
"source D:/project/BNN_hls/solution1/csynth.tcl"
invoked from within
"hls::main D:/project/BNN_hls/solution1/csynth.tcl"
("uplevel" body line 1)
invoked from within
"uplevel 1 hls::main {*}$newargs"
(procedure "hls_proc" line 16)
invoked from within
"hls_proc [info nameofexecutable] $argv
i hope you can help me, thanks！