Error message

Warning: hash_equals(): Expected user_string to be a string, null given in CRM_Contact_BAO_Contact_Utils::validChecksum() (line 232 of /home/aspt/domains/civicrm.aspt.net/public_html/sites/all/modules/civicrm/CRM/Contact/BAO/Contact/Utils.php).

Membership Directory - MARCUS LEHNERT

First Name
MARCUS
Last Name
LEHNERT
Street Address (Main)
Neuwerk 21
Supplemental Address 1 (Main)
Herbarium
Supplemental Address 2 (Main)
Universität Halle
City (Main)
State (Main)
ST
Postal Code (Main)
Country (Main)
Phone and Extension-Phone (Main)
+49-152-31946853
Phone and Extension-Fax (Main)
Research Interests
Pteridophytes, esp. neotropical Cyatheaceae, neotropical Grammitids; biogeography, mycorrhizae