ASPEN警告 该怎么处理啊，求求

WARNING WHILE EVALUATING PROP SET "PH" FOR STREAM "V0101-B" SUB-STREAM
      "MIXED"
      PH COULD NOT BE CALCULATED (H+/OH- CONC TOO LOW OR MISSING).

  *   WARNING WHILE EVALUATING PROP SET "PH25" FOR STREAM "V0101-B" SUB-STREAM
      "MIXED"
      PH COULD NOT BE CALCULATED (H+/OH- CONC TOO LOW OR MISSING).

  *   WARNING WHILE EVALUATING PROP SET "PH" FOR STREAM "E0102-O" SUB-STREAM
      "MIXED"
      PH COULD NOT BE CALCULATED (H+/OH- CONC TOO LOW OR MISSING).

  *   WARNING WHILE EVALUATING PROP SET "PH" FOR STREAM "H2O" SUB-STREAM
      "MIXED"
      PH COULD NOT BE CALCULATED (H+/OH- CONC TOO LOW OR MISSING).

  *   WARNING WHILE EVALUATING PROP SET "PH" FOR STREAM "V0101-B" SUB-STREAM
      "MIXED"
      PH COULD NOT BE CALCULATED (H+/OH- CONC TOO LOW OR MISSING).

  *   WARNING WHILE EVALUATING PROP SET "PH25" FOR STREAM "E0102-O" SUB-STREAM
      "MIXED"
      PH COULD NOT BE CALCULATED (H+/OH- CONC TOO LOW OR MISSING).

  *   WARNING WHILE EVALUATING PROP SET "PH25" FOR STREAM "H2O" SUB-STREAM
      "MIXED"
      PH COULD NOT BE CALCULATED (H+/OH- CONC TOO LOW OR MISSING).

  *   WARNING WHILE EVALUATING PROP SET "PH25" FOR STREAM "V0101-B" SUB-STREAM
      "MIXED"
      PH COULD NOT BE CALCULATED (H+/OH- CONC TOO LOW OR MISSING).

  *   WARNING WHILE EVALUATING PROP SET "PH" FOR STREAM "M0101-0" SUB-STREAM
      "MIXED"
      PH COULD NOT BE CALCULATED (H+/OH- CONC TOO LOW OR MISSING).

这些警告表示在流中H+或OH-的浓度过低或缺失，导致无法计算pH值。需要检查模拟中相关流的组成是否正确，是否包含足够的H+或OH-以计算pH值。如有必要，调整流的组成或添加缺失的组分，然后重新进行模拟计算。如果该流不应当包含H+或OH-，可能需要在模拟设置中更改或禁用pH的计算。
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