Error message

• Notice: Trying to get property of non-object in twitter_block_preprocess_twitter_block_tweet() (line 246 of /home/swidersk/public_html/sites/all/modules/twitter_block/twitter_block.module).
• Notice: Trying to get property of non-object in twitter_block_preprocess_twitter_block_tweet() (line 247 of /home/swidersk/public_html/sites/all/modules/twitter_block/twitter_block.module).
• Notice: Trying to get property of non-object in twitter_block_preprocess_twitter_block_tweet() (line 247 of /home/swidersk/public_html/sites/all/modules/twitter_block/twitter_block.module).
• Notice: Trying to get property of non-object in twitter_block_preprocess_twitter_block_tweet() (line 248 of /home/swidersk/public_html/sites/all/modules/twitter_block/twitter_block.module).
• Notice: Trying to get property of non-object in twitter_block_preprocess_twitter_block_tweet() (line 248 of /home/swidersk/public_html/sites/all/modules/twitter_block/twitter_block.module).