HLS C仿真报错，用的是xilinx官网的列子

vivado HLS PID控制器设计,C仿真级联合仿真通不过，代码在压缩包，大牛们赐教下，有点急
Cannot open input file e_res.txt
@E Simulation failed.
ERROR: [SIM 211-100] CSim failed with errors.
INFO: [SIM 211-3] *************** CSIM finish ***************
4
    while executing
"source H:/xilin_project/pid_1/pid/solution1/csim.tcl"
    invoked from within
"hls::main H:/xilin_project/pid_1/pid/solution1/csim.tcl"
    ("uplevel" body line 1)
    invoked from within
"uplevel 1 hls::main {*}$args"
    (procedure "hls_proc" line 5)
    invoked from within
"hls_proc $argv"
Finished C simulation.

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