In a quite fresh installation (on a fresh patched centOS machine) I get the following error, since I did delete the predefined project categories and added my own ones. I have added only one testing project so far and that one doesn't have the old categories assigned, for sure (and the pre-defined ones have no categories too).
When we open the menu Projects -> Browse all (link: /softwaremap/trove_list.php) then we get the following error in the nginx/error.log:
2018/01/09 08:29:26 [error] 2008#0: *1 FastCGI sent in stderr: "PHP message: PHP Fatal error: Uncaught exception 'Mustache_Exception_UnknownVariableException' with message 'Unknown variable: current_category' in /usr/share/tuleap/src/vendor/mustache/mustache/src/Mustache/Context.php:245
Stack trace:
#0 /usr/share/tuleap/src/vendor/mustache/mustache/src/Mustache/Context.php(102): Mustache_Context->findVariableInStack('current_categor...', Array)
#1 /var/tmp/tuleap_cache/template_engine/__Mustache_ed2f43f5776a7acdcfc6f1258a4ac65d.php(60): Mustache_Context->find('current_categor...')
#2 /usr/share/tuleap/src/vendor/mustache/mustache/src/Mustache/Template.php(73): __Mustache_ed2f43f5776a7acdcfc6f1258a4ac65d->renderInternal(Object(Mustache_Context))
#3 /usr/share/tuleap/src/vendor/mustache/mustache/src/Mustache/Engine.php(244): Mustache_Template->render(Object(Tuleap\Trove\SoftwareMapPresenter))" while reading upstream, client: 192.168.100.172, server: board.ps.local, request: "GET /softwaremap/trove_list.php HTTP/1.1", upstream: "
fastcgi://127.0.0.1:9000", host: "board.ps.local", referrer: "
https://board.ps.local/my/"
2018/01/09 08:29:26 [error] 2008#0: *1 FastCGI sent in stderr: "
#4 /usr/share/tuleap/src/common/templating/mustache/MustacheRenderer.class.php(65): Mustache_Engine->render('software_map', Object(Tuleap\Trove\SoftwareMapPresenter))
#5 /usr/shar" while reading upstream, client: 192.168.100.172, server: board.ps.local, request: "GET /softwaremap/trove_list.php HTTP/1.1", upstream: "
fastcgi://127.0.0.1:9000", host: "board.ps.local", referrer: "
https://board.ps.local/my/"
Maybe one has an idea?