Answered Fatal error: Maximum function nesting level of '256' reached, aborting! in /var/www/modx/core/xpdo/xpdo.class.php on line 1935

Apache/2.4.18
PHP 7.0
Ubuntu 16.04
MySQL Ver 14.14 Distrib 5.7.19, for Linux (x86_64) using EditLine wrapper
MODX Revolution 2.5.7-pl (Advanced), moved folders 'core', 'manager' & 'connectors'.

What I have done:
1. created some nearly empty pages (i set only alias, menutitle, title and one-word content).
2. added some simple TVs (2 checkboxes), footer, header, places for 3 meta tags.

When I open a page by non-existent alias it shows following Errors.
Example: '.../index.php?q=broken'
Is it ok?
Why is there a recursion? Why just not an error 'no page'?

Errors:

Fatal error: Maximum function nesting level of '256' reached, aborting! in /var/www/modx/core/xpdo/xpdo.class.php on line 1935

Fatal error: Maximum function nesting level of '256' reached, aborting! in /var/www/modx/core/model/modx/modsessionhandler.class.php on line 105

and a lot of other details after errors like these:

Call Stack
# Time Memory Function Location
1 0.0000 364120 {main}( ) .../index.php:0
2 0.0094 1026208 modX->handleRequest( ) .../index.php:57
3 0.0094 1028480 modRequest->handleRequest( ) .../modx.class.php:1401
4 0.0133 1174248 modX->sendErrorPage( ) .../modrequest.class.php:108
5 0.0133 1174624 modX->sendForward( ) .../modx.class.php:1185
6 0.0143 1175112 modX->sendErrorPage( ) .../modx.class.php:1149
7 0.0143 1175488 modX->sendForward( ) .../modx.class.php:1185
8 0.0154 1175512 modX->sendErrorPage( ) .../modx.class.php:1149
9 0.0154 1175888 modX->sendForward( ) .../modx.class.php:1185
10 0.0163 1175888 modX->sendErrorPage( ) .../modx.class.php:1149
........................................................................
........................................................................
........................................................................
242 0.1036 1219504 modX->sendErrorPage( ) .../modx.class.php:1149
243 0.1036 1219880 modX->sendForward( ) .../modx.class.php:1185
244 0.1042 1219880 modX->sendErrorPage( ) .../modx.class.php:1149
245 0.1042 1220256 modX->sendForward( ) .../modx.class.php:1185
246 0.1042 1220256 modRequest->getResource( ) .../modx.class.php:1134
247 0.1046 1225752 xPDO->getObject( ) .../modrequest.class.php:227
248 0.1046 1226176 xPDO->call( ) .../xpdo.class.php:844
249 0.1046 1226600 modAccessibleObject::load( ) .../xpdo.class.php:757
250 0.1046 1226600 xPDOObject::_loadRows( ) .../modaccessibleobject.class.php:91
251 0.1046 1226600 xPDOQuery->prepare( ) .../xpdoobject.class.php:233
252 0.1046 1226600 xPDOQuery_mysql->construct( ) .../xpdoquery.class.php:650
253 0.1046 1227512 xPDOQuery->buildConditionalClause( ) .../xpdoquery.class.php:116
254 0.1047 1227536 xPDOQuery->buildConditionalClause( ) .../xpdoquery.class.php:852
255 0.1047 1227560 xPDOQuery->buildConditionalClause( ) .../xpdoquery.class.php:852
256 0.1047 1227584 xPDOQuery->buildConditionalClause( ) .../xpdoquery.class.php:852

[ed. note: tester3 last edited this post 9 years ago.]