SQLSTATE[08004] [1040] Too many connections

Fatal error: Uncaught Error: Call to a member function prepare() on bool in /var/www/html/inc_magicDB_prepared.php:139 Stack trace: #0 /var/www/html/inc_magicDB_prepared.php(182): paramDB_read('\n\t\tSELECT *\n\t\tF...', Array) #1 /var/www/html/inc_ner_batches.php(294): paramDB_simpleread('\n\t\tSELECT *\n\t\tF...', Array) #2 /var/www/html/ajaxinc_ner_giveaway_summary_search.php(409): ner_get_most_recent_batch() #3 /var/www/html/ner_page_author.php(45): include_once('/var/www/html/a...') #4 /var/www/html/ner_controller.php(509): include_once('/var/www/html/n...') #5 {main} thrown in /var/www/html/inc_magicDB_prepared.php on line 139