ERROR...

struct
Charset utf-8
ErrorDetail [empty string]
Filecontent {"responseHeader":{"status":400,"QTime":1,"params":{"q":"*","fl":"*,score","start":"0","fq":"category:","sort":"sold_f desc","rows":"9999","wt":"json"}},"error":{"msg":"org.apache.solr.search.SyntaxError: Cannot parse 'category:': Encountered \"<EOF>\" at line 1, column 9.\r\nWas expecting one of:\r\n <BAREOPER> ...\r\n \"(\" ...\r\n \"*\" ...\r\n <QUOTED> ...\r\n <TERM> ...\r\n <PREFIXTERM> ...\r\n <WILDTERM> ...\r\n <REGEXPTERM> ...\r\n \"[\" ...\r\n \"{\" ...\r\n <LPARAMS> ...\r\n <NUMBER> ...\r\n ","code":400}}
Header HTTP/1.1 400 Bad Request Connection: close Last-Modified: Sat, 23 Feb 2019 22:07:33 GMT ETag: "1691c6632fb" Cache-Control: no-cache, no-store Pragma: no-cache Expires: Sat, 01 Jan 2000 01:00:00 GMT Content-Type: application/json;charset=utf-8 Server: Jetty(9.4.12.v20180830)
Mimetype application/json
Responseheader
struct
Cache-Control no-cache, no-store
Connection close
Content-Type application/json;charset=utf-8
ETag "1691c6632fb"
Expires Sat, 01 Jan 2000 01:00:00 GMT
Explanation Bad Request
Http_Version HTTP/1.1
Last-Modified Sat, 23 Feb 2019 22:07:33 GMT
Pragma no-cache
Server Jetty(9.4.12.v20180830)
Status_Code 400
Statuscode 400 Bad Request
Text YES