Running examples in 'ukgasapi-Ex.R' failed
The error most likely occurred in:

> ### Name: dataItemExplorer
> ### Title: Data Item Explorer API
> ### Aliases: dataItemExplorer
> 
> ### ** Examples
> 
> # Specify the data item(s) to enquire from API
> dataitems <- c("Storage Injection, Actual",
+                "Storage Withdrawal, Actual")
> 
> # Initialise API (requires internet connection for this step)
> response <- dataItemExplorer(dataitems,
+                              fromdate = "2013-10-01",
+                              todate="2015-09-30")
> 
> # Visualise the results on a chart
> library(ggplot2)
*   Trying 104.18.75.103...
* Connected to marketinformation.natgrid.co.uk (104.18.75.103) port 443 (#0)
* successfully set certificate verify locations:
*   CAfile: D:/temp/Rtmp0UXysj/RLIBS_1921c331d7047/RCurl/etc/ca-bundle.crt
  CApath: none
* SSL connection using TLSv1.0 / ECDHE-RSA-AES128-SHA
* Server certificate:
* 	 subject: OU=Domain Control Validated; OU=PositiveSSL Multi-Domain; CN=ssl897921.cloudflaressl.com
* 	 start date: 2019-04-19 00:00:00 GMT
* 	 expire date: 2019-10-26 23:59:59 GMT
* 	 subjectAltName: marketinformation.natgrid.co.uk matched
* 	 issuer: C=GB; ST=Greater Manchester; L=Salford; O=COMODO CA Limited; CN=COMODO RSA Domain Validation Secure Server CA 2
* 	 SSL certificate verify ok.
> POST /MIPIws-public/public/publicwebservice.asmx HTTP/1.1
Host: marketinformation.natgrid.co.uk
Accept: text/xml
Content-Type: application/soap+xml; charset=utf-8
Content-Length: 655

* upload completely sent off: 655 out of 655 bytes
< HTTP/1.1 200 OK
< Date: Mon, 27 May 2019 21:23:41 GMT
< Content-Type: application/soap+xml; charset=utf-8
< Content-Length: 404603
< Connection: keep-alive
< Set-Cookie: __cfduid=d482d5f15ed926ea85f41dc88414f763a1558992221; expires=Tue, 26-May-20 21:23:41 GMT; path=/; domain=.natgrid.co.uk; HttpOnly
< Cache-Control: private, max-age=0
< X-AspNet-Version: 4.0.30319
< X-Powered-By: ASP.NET
< Set-Cookie: ARRAffinity=649618b40a8d3b7c44f3a68e19781f72028a87815500ae1a18577df0bb5bc809;Path=/;HttpOnly;Domain=marketinformation.natgrid.co.uk
< Expect-CT: max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
< Server: cloudflare
< CF-RAY: 4ddb0d268f89c49f-DUS
< 
* Connection #0 to host marketinformation.natgrid.co.uk left intact
Error: package or namespace load failed for 'ggplot2' in library.dynam(lib, package, package.lib):
 DLL 'Rcpp' not found: maybe not installed for this architecture?
Execution halted