Problems printing with Google basemap using a Google Api Key

[danabit]

Context

• MapFish print version: 2.1.0
• Java version: Java 8 (Eclipse Adoptium [jdk8u345-b01])
• OS: Windows

Describe the bug

Problems printing with Google basemap using a Google Api Key

How to reproduce

Using the Google section of the following link:
http://www.mapfish.org/doc/print/protocol.html

and the Keys section of the following link:
http://www.mapfish.org/doc/print/configuration.html

I configured the Google request by passing the following parameters from my application to the mapfish print module:

google: {
map: (layer = {}) => ({
"baseURL": "http://maps.google.com/maps/api/staticmap",
"opacity": getOpacity(layer),
"type": "google",
"maptype": "hybrid",
"maxExtent": [-20037508.34,
-20037508.34,
20037508.34,
20037508.34
],
"extension": "png",
"format": layer.format || "image/png",
"sensor": false,
"resolutions": [
156543.03390625,
78271.516953125,
39135.7584765625,
19567.87923828125,
9783.939619140625,
4891.9698095703125,
2445.9849047851562,
1222.9924523925781,
611.4962261962891,
305.74811309814453,
152.87405654907226,
76.43702827453613,
38.218514137268066,
19.109257068634033,
9.554628534317017,
4.777314267158508,
2.388657133579254,
1.194328566789627,
0.5971642833948135
]
})
}

The parameters arrive correctly at the mapfish print module.

I configured the Yaml file also using the "keys" section like so:

keys:

• !key
  host: !dnsMatch
  host: maps.google.com
  port: 80
  domain: !dnsMatch
  host: localhost
  key: here i wrote my apikey
  id: here i wrote my id project in google console

I am working on localhost so I used port 80 for the request.
In the "type" parameter, I tried to use both "google" and "tiledGoogle", without changing the result.

Actual results

I get the following error:

ERROR 2022-11-02 09:49:31.590 MapPrinterServlet.error() - Error while generating PDF
java.lang.NullPointerException
at org.mapfish.print.map.readers.google.GoogleConfig.createUriSigner(GoogleConfig.java:103)
at org.mapfish.print.map.readers.google.GoogleConfig.(GoogleConfig.java:65)
at org.mapfish.print.map.readers.google.GoogleMapReader.(GoogleMapReader.java:60)
at org.mapfish.print.map.readers.google.GoogleMapReader.(GoogleMapReader.java:43)
at org.mapfish.print.map.readers.google.GoogleMapReader$Factory.create(GoogleMapReader.java:48)
at org.mapfish.print.map.readers.MapReaderFactoryFinder.create(MapReaderFactoryFinder.java:36)
at org.mapfish.print.map.MapChunkDrawer.renderImpl(MapChunkDrawer.java:120)
at org.mapfish.print.ChunkDrawer.render(ChunkDrawer.java:55)
at org.mapfish.print.ChunkDrawer.tableLayout(ChunkDrawer.java:49)
at com.itextpdf.text.pdf.PdfPTable.writeSelectedRows(PdfPTable.java:855)
at com.itextpdf.text.pdf.ColumnText.goComposite(ColumnText.java:1978)
at com.itextpdf.text.pdf.ColumnText.go(ColumnText.java:999)
at com.itextpdf.text.pdf.ColumnText.go(ColumnText.java:993)
at com.itextpdf.text.pdf.ColumnText.go(ColumnText.java:981)
at com.itextpdf.text.pdf.PdfPRow.writeCells(PdfPRow.java:583)
at com.itextpdf.text.pdf.PdfPTable.writeSelectedRows(PdfPTable.java:831)
at com.itextpdf.text.pdf.ColumnText.goComposite(ColumnText.java:1978)
at com.itextpdf.text.pdf.ColumnText.go(ColumnText.java:999)
at com.itextpdf.text.pdf.ColumnText.go(ColumnText.java:993)
at com.itextpdf.text.pdf.ColumnText.go(ColumnText.java:981)
at com.itextpdf.text.pdf.PdfPRow.writeCells(PdfPRow.java:583)
at com.itextpdf.text.pdf.PdfPTable.writeSelectedRows(PdfPTable.java:831)
at com.itextpdf.text.pdf.ColumnText.goComposite(ColumnText.java:1978)
at com.itextpdf.text.pdf.ColumnText.go(ColumnText.java:999)
at com.itextpdf.text.pdf.ColumnText.go(ColumnText.java:993)
at com.itextpdf.text.pdf.ColumnText.go(ColumnText.java:981)
at com.itextpdf.text.pdf.PdfPRow.writeCells(PdfPRow.java:583)
at com.itextpdf.text.pdf.PdfPTable.writeSelectedRows(PdfPTable.java:831)
at com.itextpdf.text.pdf.PdfPTable.writeSelectedRows(PdfPTable.java:964)
at com.itextpdf.text.pdf.PdfPTable.writeSelectedRows(PdfPTable.java:910)
at com.itextpdf.text.pdf.PdfPTable.writeSelectedRows(PdfPTable.java:889)
at org.mapfish.print.config.layout.ColumnsBlock$1.render(ColumnsBlock.java:67)
at org.mapfish.print.PDFCustomBlocks.addAbsoluteDrawer(PDFCustomBlocks.java:186)
at org.mapfish.print.config.layout.ColumnsBlock.render(ColumnsBlock.java:56)
at org.mapfish.print.config.layout.Page.render(Page.java:80)
at org.mapfish.print.config.layout.Layout.render(Layout.java:64)
at org.mapfish.print.output.AbstractOutputFormat.doPrint(AbstractOutputFormat.java:31)
at org.mapfish.print.output.PdfOutputFactory.print(PdfOutputFactory.java:58)
at org.mapfish.print.MapPrinter.print(MapPrinter.java:176)
at org.mapfish.print.servlet.MapPrinterServlet.doCreatePDFFile(MapPrinterServlet.java:385)
at org.mapfish.print.servlet.MapPrinterServlet.createPDF(MapPrinterServlet.java:185)
at org.mapfish.print.servlet.MapPrinterServlet.doPost(MapPrinterServlet.java:113)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:696)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:779)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:197)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:135)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:687)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:360)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:399)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:893)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1789)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)
at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:750)

Expected results

I should have as a result, the map including the layers and the Google basemap