[Solved] The flask service started by gevent reports the error Too many open files

The flask service started by gevent reports the error Too many open files

Traceback (most recent call last):
  File "/data/miniconda3/envs/ner_py37/lib/python3.7/site-packages/gevent/baseserver.py", line 227, in _do_read
  File "/data/miniconda3/envs/ner_py37/lib/python3.7/site-packages/gevent/server.py", line 198, in do_read
OSError: [Errno 24] Too many open files
2022-07-13T12:23:52Z <WSGIServer at 0x7fc47ec6d790 fileno=4 address=0.0.0.0:8088> failed with OSError

This problem generally occurs when the interface is called frequently. This problem can be solved by modifying (change to a larger number) the limit of the number of times of reading and writing files in the Linux system.