stanfordnlp.pexpect.EOF: End Of File (EOF). Empty string style platform.

[yrf1]

I was trying to run the very first step:
python2 amr_parsing.py -m preprocess source_without_tag_path_________.sgm

Error message:
> `java -Xmx2500m -cp stanfordnlp/stanford-corenlp-full-2015-04-20/stanford-corenlp-3.5.2.jar:stanfordnlp/stanford-corenlp-full-2015-04-20/stanford-corenlp-3.5.2-models.jar:stanfordnlp/stanford-corenlp-full-2015-04-20/joda-time.jar:stanfordnlp/stanford-corenlp-full-2015-04-20/xom.jar:stanfordnlp/stanford-corenlp-full-2015-04-20/jollyday.jar:stanfordnlp/stanford-corenlp-full-2015-04-20/protobuf.jar:stanfordnlp/stanford-corenlp-full-2015-04-20/javax.json.jar:stanfordnlp/stanford-corenlp-full-2015-04-20/ejml-0.23.jar edu.stanford.nlp.pipeline.StanfordCoreNLP -props stanfordnlp/default.properties
> Traceback (most recent call last):
>   File "amr_parsing.py", line 436, in <module>
>     main()
>   File "amr_parsing.py", line 169, in main
>     instances = preprocess(amr_file,START_SNLP=True,INPUT_AMR=args.amrfmt, PRP_FORMAT=args.prpfmt)
>   File "/Users/may/Desktop/Fall2020/camr/preprocessing.py", line 429, in preprocess
>     proc1 = StanfordCoreNLP()
>   File "/Users/may/Desktop/Fall2020/camr/stanfordnlp/corenlp.py", line 309, in __init__
>     self.setup()
>   File "/Users/may/Desktop/Fall2020/camr/stanfordnlp/corenlp.py", line 355, in setup
>     self.corenlp.expect("Loaded models....", timeout=20)
>   File "/Users/may/Desktop/Fall2020/camr/stanfordnlp/pexpect/__init__.py", line 1451, in expect
>     timeout, searchwindowsize)
>   File "/Users/may/Desktop/Fall2020/camr/stanfordnlp/pexpect/__init__.py", line 1466, in expect_list
>     timeout, searchwindowsize)
>   File "/Users/may/Desktop/Fall2020/camr/stanfordnlp/pexpect/__init__.py", line 1554, in expect_loop
>     raise EOF(str(err) + '\n' + str(self))
> stanfordnlp.pexpect.EOF: End Of File (EOF). Empty string style platform.`