idbeta opened a new issue #863:
URL: https://github.com/apache/apisix-dashboard/issues/863
# Bug report
## Describe the bug
2.1 version create route with `cors` plugin and `cors` used the default
setting `{}`, as below：
```
{"name":"test","uris":["/name"],"methods":["GET","HEAD","POST","PUT","DELETE","OPTIONS","PATCH"],"plugins":{"cors":{}},"vars":[],"upstream":{"type":"roundrobin","timeout":{"connect":6000,"send":6000,"read":6000},"nodes":[{"host":"127.0.0.1","port":7000,"weight":1}]}}
```
when request the route, will cause an error:
```
*104794 failed to run header_filter_by_lua*:
/Users/idbeta/1106/apisix/apisix/plugins/cors.lua:89: bad argument #1 to
'str_find' (string expected, got nil)
stack traceback:
[C]: in function 'str_find'
/Users/idbeta/1106/apisix/apisix/plugins/cors.lua:89: in function
'create_obj_fun'
/Users/idbeta/1106/apisix/apisix/core/lrucache.lua:92: in function
'plugin_ctx'
/Users/idbeta/1106/apisix/apisix/plugins/cors.lua:168: in function
'phase_func'
/Users/idbeta/1106/apisix/apisix/init.lua:159: in function 'run_plugin'
/Users/idbeta/1106/apisix/apisix/init.lua:622: in function
'common_phase'
/Users/idbeta/1106/apisix/apisix/init.lua:632: in function
'http_header_filter_phase'
header_filter_by_lua:2: in main chunk while reading response header
from upstream, client: 127.0.0.1, server: , request: "GET /name HTTP/1.1",
upstream: "http://127.0.0.1:7000/name";, host: "127.0.0.1:9080"
```
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