Warning appearing when selecting Agreements/All in Khmer language

[acorbi]

Steps to reproduce the issue:

1. Go to https://opendevelopmentcambodia.net/km/database/laws-policies-and-agreements
2. Select content type = Agreement
3. Select document type = All
4. Following warning appears:

Warning: implode(): Invalid arguments passed in /var/www/html/wp-content/plugins/wp-odm_tabular_pages/post-types/templates/odc-laws-template.php on line 133

https://opendevelopmentcambodia.net/km/database/laws-policies-and-agreements?query=&taxonomy=all&group_type=agreement&odm_document_type=all

[Huyeng]

Missing configuration in Khmer.