Could not prepare context: mgr

halftrainedharry · January 3, 2025, 5:05pm

It’s unclear, when exactly this error message is created.
It’s thrown here in the code in the function _initContext().

github.com

modxcms/revolution/blob/62b154af9c6df94e98d80b4e178e64e508e6b966/core/src/Revolution/modX.php#L2590


      
              $this->context= $this->newObject(modContext::class);
              $this->context->_fields['key']= $contextKey;
              if (!$this->context->validate()) {
                  $this->log(modX::LOG_LEVEL_ERROR, 'No valid context specified: ' . $contextKey);
                  $this->context = null;
              }
          }
          if ($this->context) {
              if (!$this->context->prepare((boolean) $regenerate, is_array($options) ? $options : [])) {
                  $this->context= null;
                  $this->log(modX::LOG_LEVEL_ERROR, 'Could not prepare context: ' . $contextKey);
              } else {
                  //This fixes error with multiple contexts
                  $this->contexts[$contextKey]=$this->context;
          
                  if ($this->context->checkPolicy('load')) {
                      $this->aliasMap= & $this->context->aliasMap;
                      $this->resourceMap= & $this->context->resourceMap;
                      $this->eventMap= & $this->context->eventMap;
                      $this->pluginCache= & $this->context->pluginCache;
                      $this->config= array_merge($this->_systemConfig, $this->context->config);

The function _initContext() is called on every request to initialize the context and after a context switch.

The line $modx->switchContext($cKey); will call the _initContext() function again. But as the context “mgr” is explicitely excluded in the code ($query->where(array('modContext.key:NOT IN' => array('web', 'mgr')));), it’s unlikely that this plugin is the source of the error.