JSON problem

CL-USER> (drakma:http-request (concatenate 'string
		  *url*
		  (previous-close 'AAPL t)
		  *api-key*))
#(123 34 116 105 99 107 101 114 34 58 34 65 65 80 76 34 44 34 113 117 101 114
  121 67 111 117 110 116 34 58 49 44 34 114 101 115 117 108 116 115 67 111 117
  110 116 34 58 49 44 34 97 100 106 117 115 116 101 100 34 58 116 114 117 101
  44 34 114 101 115 117 108 116 115 34 58 91 123 34 84 34 58 34 65 65 80 76 34
  44 34 118 34 58 54 46 57 55 55 49 57 48 54 101 43 48 55 44 34 118 119 34 58
  49 53 50 46 48 57 51 57 44 34 111 34 58 49 53 50 46 53 55 53 44 34 99 34 58
  49 53 49 46 55 51 44 34 104 34 58 49 53 51 46 49 44 34 108 34 58 49 53 48 46
  55 56 44 34 116 34 58 49 54 55 53 55 49 55 50 48 48 48 48 48 44 34 110 34 58
  53 56 51 53 49 55 125 93 44 34 115 116 97 116 117 115 34 58 34 79 75 34 44 34
  114 101 113 117 101 115 116 95 105 100 34 58 34 57 99 97 56 49 50 100 51 57
  97 102 98 100 51 48 50 50 52 53 102 48 99 102 49 99 51 54 50 102 97 102 48 34
  44 34 99 111 117 110 116 34 58 49 125)
200 (8 bits, #xC8, #o310, #b11001000)
((:SERVER . "nginx/1.19.2") (:DATE . "Tue, 07 Feb 2023 18:29:29 GMT")
 (:CONTENT-TYPE . "application/json") (:TRANSFER-ENCODING . "chunked")
 (:CONNECTION . "close") (:VARY . "Accept-Encoding,Accept-Encoding")
 (:X-REQUEST-ID . "9ca812d39afbd302245f0cf1c362faf0")
 (:STRICT-TRANSPORT-SECURITY . "max-age=15724800; includeSubDomains"))
#<PURI:URI https://api.polygon.io/v2/aggs/ticker/AAPL/prev?adjusted=TRUE&apiKey=myapikey>
#<FLEXI-STREAMS:FLEXI-IO-STREAM {1005DEB1F3}>
T
"OK"
CL-USER> (st-json:read-json (drakma:http-request (concatenate 'string
		  *url*
		  (previous-close 'AAPL t)
		  *api-key*)))
; Debugger entered on #<SB-PCL::NO-APPLICABLE-METHOD-ERROR {1005EC2763}>
[1] CL-USER>
; Evaluation aborted on #<SB-PCL::NO-APPLICABLE-METHOD-ERROR {1005EC2763}>
CL-USER>