<div style="line-height:1.7;color:#000000;font-size:14px;font-family:Arial"><div style="margin: 0;">Hi, Andrew,</div><div style="margin: 0;">Thanks for the help. I looked into the error log and it appears to be some variable type delcaration problem to me as I compared the "query-lib.php" file with its early 3.2.43 version and found you reengineered the code a bit and had all the variable type declaration (e.g. string, bool) removed. Could this be the cause of problem? I pasted the error below for your reference:</div><div style="margin: 0;"><br></div><div style="margin: 0;">***************************************</div><div style="margin: 0;"><span>[Mon Oct 18 08:47:13.623391 2021] [php7:error] [pid 142109] [client 127.0.0.1:35296] PHP Fatal error: Uncaught TypeError: Argument 1 passed to get_tertiary_mapping_table() must be of the type string, null given, called in /var/www/html/nuist/lib/query-lib.php on line 426 and defined in /var/www/html/nuist/lib/query-lib.php:676\nStack trace:\n#0 /var/www/html/nuist/lib/query-lib.php(426): get_tertiary_mapping_table()\n#1 /var/www/html/nuist/lib/query-lib.php(367): process_simple_query_new()\n#2 /var/www/html/nuist/lib/concordance-ui.php(319): process_simple_query()\n#3 /var/www/html/nuist/exe/concordance.php(1): require('/var/www/html/n...')\n#4 {main}\n thrown in /var/www/html/nuist/lib/query-lib.php on line 676, referer: http://localhost/nuist/ciiss_en/<br></span></div><div style="margin: 0;">***************************************<br></div><p style="margin: 0;"><br></p><div style="margin: 0;">Best wishes,</div><div style="margin: 0;">David<br></div><br><div id="divNeteaseMailCard"></div><p style="margin: 0;"><br></p><pre><br>At 2021-10-17 18:00:01, cwb-request@sslmit.unibo.it wrote:
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> 1. Re: CQPweb does not return results but blank page
> (Hardie, Andrew)
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>----------------------------------------------------------------------
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>Message: 1
>Date: Sat, 16 Oct 2021 22:18:59 +0000
>From: "Hardie, Andrew" <a.hardie@lancaster.ac.uk>
>To: Open source development of the Corpus WorkBench
> <cwb@sslmit.unibo.it>
>Subject: Re: [CWB] CQPweb does not return results but blank page
>Message-ID:
> <LO4P265MB34856FD450732BBEFE2CB297CBBA9@LO4P265MB3485.GBRP265.PROD.OUTLOOK.COM>
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>Content-Type: text/plain; charset="iso-2022-jp"
>
>Hi David,
>
>in case of a blank screen, almost certainly there is an error, but it has been printed to your server log instead of to the browser.
>
>there is a PHP ini setting you can adjust for this -- search for "error" in php.ini . or have a look at your log file -- if you are using Apache it will be something like /var/log/apache2/error.log
>
>best
>
>Andrew.
>
>________________________________
>From: cwb-bounces@sslmit.unibo.it <cwb-bounces@sslmit.unibo.it> on behalf of ?? <yuyuan97@163.com>
>Sent: Friday, October 15, 2021 2:35:29 PM
>To: cwb@sslmit.unibo.it <cwb@sslmit.unibo.it>
>Subject: [CWB] CQPweb does not return results but blank page
>
>Dear All,
>I recently installed CWB and CQPweb on a Ubuntu desktop for demo purpose. It seems that there are no glitches at all from the beginning to the end until I started query after the installation of a preindexed corpus. There was no response but a blank page, showing no errors too. The preindexed corpus was taken from my server that was taken offline. It was supposed to work well with CQPweb. I met the same problem when I tried the sample Dickens corpus. I am using CWB 3.4.33 and CQPweb 3.3.10. My corpus was indexed with an earlier version of CWB (should this be an issue?).
>
>Best wishes,
>David
>
>
>
>
>
>
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</pre></div><br><br><span title="neteasefooter"><p> </p></span>